From 8ca6c8118ccd779b25835681c5c0c45b3a2625f9 Mon Sep 17 00:00:00 2001
From: Myriad-Dreamin <35292584+Myriad-Dreamin@users.noreply.github.com>
Date: Mon, 20 Jan 2025 23:00:31 +0800
Subject: [PATCH] feat: merge fs and std crate (#1203)

* feat: merge fs and std crate

* fix: errors
---
 Cargo.lock                                    |  22 +-
 Cargo.toml                                    |   5 +-
 crates/tinymist-fs/Cargo.toml                 |  41 ----
 crates/tinymist-fs/src/errors.rs              |   2 -
 crates/tinymist-project/Cargo.toml            |   3 +-
 crates/tinymist-project/src/args.rs           |   7 +-
 crates/tinymist-project/src/compiler.rs       |   4 +-
 crates/tinymist-project/src/lock.rs           |   2 +-
 crates/tinymist-project/src/model.rs          |  40 ++--
 crates/tinymist-project/src/model/task.rs     |   1 -
 crates/tinymist-project/src/world.rs          |  15 +-
 crates/tinymist-std/Cargo.toml                |  58 +++--
 crates/tinymist-std/src/adt/fmap.rs           |   9 +-
 crates/tinymist-std/src/adt/mod.rs            |   2 +
 crates/tinymist-std/src/concepts/cow_mut.rs   |  10 +
 crates/tinymist-std/src/concepts/hash.rs      |  61 -----
 crates/tinymist-std/src/concepts/marker.rs    |   1 +
 crates/tinymist-std/src/concepts/mod.rs       |   6 +-
 crates/tinymist-std/src/concepts/query.rs     |   3 +
 crates/tinymist-std/src/concepts/read.rs      |   2 +
 crates/tinymist-std/src/debug_loc.rs          |  28 ++-
 crates/tinymist-std/src/error.rs              | 215 +++++++++++++-----
 .../src/lib.rs => tinymist-std/src/fs.rs}     |   5 +-
 .../src => tinymist-std/src/fs}/flock.rs      |   6 +-
 .../src => tinymist-std/src/fs}/paths.rs      |   3 +-
 crates/tinymist-std/src/hash.rs               |  81 ++++++-
 crates/tinymist-std/src/lib.rs                |   9 +-
 crates/tinymist-std/src/path.rs               |   2 +
 crates/tinymist-std/src/time.rs               |   2 +
 crates/tinymist-world/src/entry.rs            |   2 +-
 crates/tinymist-world/src/font/system.rs      |   2 +-
 crates/tinymist-world/src/font/web/mod.rs     |  12 +-
 crates/tinymist-world/src/system.rs           |   4 +-
 crates/tinymist-world/src/world.rs            |   2 +-
 crates/tinymist/Cargo.toml                    |   1 -
 crates/tinymist/src/lib.rs                    |   3 +-
 crates/tinymist/src/main.rs                   |  26 +--
 crates/tinymist/src/project.rs                |  29 +--
 crates/tinymist/src/server.rs                 |  26 +--
 crates/tinymist/src/tool/preview.rs           |   4 +-
 crates/tinymist/src/tool/project.rs           |  18 +-
 41 files changed, 449 insertions(+), 325 deletions(-)
 delete mode 100644 crates/tinymist-fs/Cargo.toml
 delete mode 100644 crates/tinymist-fs/src/errors.rs
 delete mode 100644 crates/tinymist-std/src/concepts/hash.rs
 rename crates/{tinymist-fs/src/lib.rs => tinymist-std/src/fs.rs} (55%)
 rename crates/{tinymist-fs/src => tinymist-std/src/fs}/flock.rs (99%)
 rename crates/{tinymist-fs/src => tinymist-std/src/fs}/paths.rs (99%)

diff --git a/Cargo.lock b/Cargo.lock
index 787826d4..7de74db4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4007,7 +4007,6 @@ dependencies = [
  "sync-lsp",
  "tinymist-assets 0.12.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "tinymist-core",
- "tinymist-fs",
  "tinymist-project",
  "tinymist-query",
  "tinymist-render",
@@ -4078,19 +4077,6 @@ dependencies = [
  "syn 2.0.90",
 ]
 
-[[package]]
-name = "tinymist-fs"
-version = "0.12.18"
-dependencies = [
- "anyhow",
- "core-foundation",
- "libc",
- "log",
- "same-file",
- "tempfile",
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "tinymist-project"
 version = "0.12.18"
@@ -4111,7 +4097,6 @@ dependencies = [
  "serde",
  "serde_json",
  "tinymist-derive",
- "tinymist-fs",
  "tinymist-std",
  "tinymist-world",
  "tokio",
@@ -4190,27 +4175,34 @@ dependencies = [
 name = "tinymist-std"
 version = "0.12.18"
 dependencies = [
+ "anyhow",
  "base64",
  "bitvec",
  "comemo",
+ "core-foundation",
  "dashmap",
  "ecow",
  "fxhash",
  "hex",
  "js-sys",
+ "libc",
+ "log",
  "parking_lot",
  "path-clean",
  "rkyv",
  "rustc-hash 2.1.0",
+ "same-file",
  "serde",
  "serde_json",
  "serde_repr",
  "serde_with",
  "siphasher 1.0.1",
+ "tempfile",
  "typst",
  "typst-shim",
  "wasm-bindgen",
  "web-time",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 519f6a01..c09c2b47 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -85,6 +85,7 @@ sha2 = "0.10.6"
 nohash-hasher = "0.2.0"
 
 # Data Structures
+bitvec = "1"
 comemo = "0.4"
 # We need to freeze the version of the crate, as the raw-api feature is considered unstable
 dashmap = { version = "=5.5.3", features = ["raw-api"] }
@@ -109,8 +110,9 @@ rkyv = "0.7.42"
 semver = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-serde_yaml = "0.9"
+serde_repr = "0.1"
 serde_with = { version = "3.6", features = ["base64"] }
+serde_yaml = "0.9"
 serde-wasm-bindgen = "^0.6"
 toml = { version = "0.8", default-features = false, features = [
     "parse",
@@ -184,7 +186,6 @@ tinymist-vfs = { path = "./crates/tinymist-vfs/", default-features = false }
 tinymist-core = { path = "./crates/tinymist-core/", default-features = false }
 tinymist-world = { path = "./crates/tinymist-world/", default-features = false }
 tinymist-project = { path = "./crates/tinymist-project/" }
-tinymist-fs = { path = "./crates/tinymist-fs/" }
 tinymist-derive = { path = "./crates/tinymist-derive/" }
 tinymist-analysis = { path = "./crates/tinymist-analysis/" }
 tinymist-query = { path = "./crates/tinymist-query/" }
diff --git a/crates/tinymist-fs/Cargo.toml b/crates/tinymist-fs/Cargo.toml
deleted file mode 100644
index 23d79cec..00000000
--- a/crates/tinymist-fs/Cargo.toml
+++ /dev/null
@@ -1,41 +0,0 @@
-[package]
-name = "tinymist-fs"
-description = "Filesystem support for tinymist."
-categories = ["compilers", "command-line-utilities"]
-keywords = ["tool"]
-authors.workspace = true
-version.workspace = true
-license.workspace = true
-edition.workspace = true
-homepage.workspace = true
-repository.workspace = true
-rust-version.workspace = true
-
-[dependencies]
-
-anyhow.workspace = true
-log.workspace = true
-tempfile.workspace = true
-same-file.workspace = true
-
-[target.'cfg(target_os = "macos")'.dependencies]
-core-foundation.workspace = true
-
-[target.'cfg(unix)'.dependencies]
-libc.workspace = true
-
-[target.'cfg(windows)'.dependencies]
-windows-sys = { workspace = true, features = [
-    "Win32_Foundation",
-    "Win32_Security",
-    "Win32_Storage_FileSystem",
-    "Win32_System_IO",
-    "Win32_System_Console",
-    "Win32_System_JobObjects",
-    "Win32_System_Threading",
-] }
-
-[features]
-
-[lints]
-workspace = true
diff --git a/crates/tinymist-fs/src/errors.rs b/crates/tinymist-fs/src/errors.rs
deleted file mode 100644
index a3bf2def..00000000
--- a/crates/tinymist-fs/src/errors.rs
+++ /dev/null
@@ -1,2 +0,0 @@
-/// Type alias for `anyhow::Result`.
-pub type Result<T> = anyhow::Result<T>;
diff --git a/crates/tinymist-project/Cargo.toml b/crates/tinymist-project/Cargo.toml
index 9ee5a3b2..0ffeee6b 100644
--- a/crates/tinymist-project/Cargo.toml
+++ b/crates/tinymist-project/Cargo.toml
@@ -28,8 +28,7 @@ semver.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 tinymist-world = { workspace = true, features = ["system"] }
-tinymist-fs.workspace = true
-tinymist-std.workspace = true
+tinymist-std = { workspace = true, features = ["system"] }
 tinymist-derive.workspace = true
 toml.workspace = true
 typst.workspace = true
diff --git a/crates/tinymist-project/src/args.rs b/crates/tinymist-project/src/args.rs
index 78935b8a..95da7424 100644
--- a/crates/tinymist-project/src/args.rs
+++ b/crates/tinymist-project/src/args.rs
@@ -2,11 +2,10 @@ use crate::DocIdArgs;
 use core::fmt;
 use serde::{Deserialize, Serialize};
 use std::{num::NonZeroUsize, ops::RangeInclusive, path::Path, str::FromStr, sync::OnceLock};
-use tinymist_std::{bail, error::prelude::ZResult};
+use tinymist_std::{bail, error::prelude::Result};
 pub use tinymist_world::args::{CompileFontArgs, CompilePackageArgs};
 pub use typst_preview::{PreviewArgs, PreviewMode};
 
-use anyhow::Result;
 use clap::{ValueEnum, ValueHint};
 
 use crate::model::*;
@@ -271,11 +270,11 @@ pub struct TaskCompileArgs {
     pub ppi: f32,
 
     #[clap(skip)]
-    pub output_format: OnceLock<ZResult<OutputFormat>>,
+    pub output_format: OnceLock<Result<OutputFormat>>,
 }
 
 impl TaskCompileArgs {
-    pub fn to_task(self, doc_id: Id) -> ZResult<ProjectTask> {
+    pub fn to_task(self, doc_id: Id) -> Result<ProjectTask> {
         let new_task_id = self.task_name.map(Id::new);
         let task_id = new_task_id.unwrap_or(doc_id.clone());
 
diff --git a/crates/tinymist-project/src/compiler.rs b/crates/tinymist-project/src/compiler.rs
index 2e067805..2b3d0226 100644
--- a/crates/tinymist-project/src/compiler.rs
+++ b/crates/tinymist-project/src/compiler.rs
@@ -18,7 +18,7 @@ use reflexo_typst::{
     features::{CompileFeature, FeatureSet, WITH_COMPILING_STATUS_FEATURE},
     CompileEnv, CompileReport, Compiler, TypstDocument,
 };
-use tinymist_std::error::prelude::ZResult;
+use tinymist_std::error::prelude::Result;
 use tokio::sync::mpsc;
 use typst::diag::{SourceDiagnostic, SourceResult};
 
@@ -606,7 +606,7 @@ impl<F: CompilerFeat + Send + Sync + 'static, Ext: Default + 'static> ProjectCom
         }
     }
 
-    pub fn restart_dedicate(&mut self, group: &str, entry: EntryState) -> ZResult<ProjectInsId> {
+    pub fn restart_dedicate(&mut self, group: &str, entry: EntryState) -> Result<ProjectInsId> {
         let id = ProjectInsId(group.into());
 
         let verse = CompilerUniverse::<F>::new_raw(
diff --git a/crates/tinymist-project/src/lock.rs b/crates/tinymist-project/src/lock.rs
index c09132dc..935b06d5 100644
--- a/crates/tinymist-project/src/lock.rs
+++ b/crates/tinymist-project/src/lock.rs
@@ -121,7 +121,7 @@ impl ProjectLockUpdater {
 
                             let data = serde_json::to_string(&mat).unwrap();
                             let path = cache_dir.join("path-material.json");
-                            let result = tinymist_fs::paths::write_atomic(path, data);
+                            let result = tinymist_std::fs::paths::write_atomic(path, data);
                             if let Err(err) = result {
                                 log::error!("ProjectCompiler: write material error: {err}");
                             }
diff --git a/crates/tinymist-project/src/model.rs b/crates/tinymist-project/src/model.rs
index 301b7ecb..dc8868c4 100644
--- a/crates/tinymist-project/src/model.rs
+++ b/crates/tinymist-project/src/model.rs
@@ -4,18 +4,16 @@ use std::io::{Read, Seek, SeekFrom, Write};
 use std::path::PathBuf;
 use std::{cmp::Ordering, path::Path, str::FromStr};
 
-use anyhow::{bail, Context};
 use clap::ValueHint;
 use ecow::{eco_vec, EcoVec};
 use serde::{Deserialize, Serialize};
+use tinymist_std::error::prelude::*;
 use tinymist_std::path::unix_slash;
-use tinymist_std::ImmutPath;
+use tinymist_std::{bail, ImmutPath};
 use tinymist_world::EntryReader;
 use typst::diag::EcoString;
 use typst::syntax::FileId;
 
-pub use anyhow::Result;
-
 pub mod task;
 pub use task::*;
 
@@ -39,17 +37,17 @@ pub enum LockFileCompat {
 }
 
 impl LockFileCompat {
-    pub fn version(&self) -> anyhow::Result<&str> {
+    pub fn version(&self) -> Result<&str> {
         match self {
             LockFileCompat::Version010Beta0(..) => Ok(LOCK_VERSION),
             LockFileCompat::Other(v) => v
                 .get("version")
                 .and_then(|v| v.as_str())
-                .ok_or_else(|| anyhow::anyhow!("missing version field")),
+                .context("missing version field"),
         }
     }
 
-    pub fn migrate(self) -> anyhow::Result<LockFile> {
+    pub fn migrate(self) -> Result<LockFile> {
         match self {
             LockFileCompat::Version010Beta0(v) => Ok(v),
             this @ LockFileCompat::Other(..) => {
@@ -189,12 +187,14 @@ impl LockFile {
     }
 
     pub fn update(cwd: &Path, f: impl FnOnce(&mut Self) -> Result<()>) -> Result<()> {
-        let fs = tinymist_fs::flock::Filesystem::new(cwd.to_owned());
+        let fs = tinymist_std::fs::flock::Filesystem::new(cwd.to_owned());
 
-        let mut lock_file = fs.open_rw_exclusive_create(LOCK_FILENAME, "project commands")?;
+        let mut lock_file = fs
+            .open_rw_exclusive_create(LOCK_FILENAME, "project commands")
+            .context("tinymist.lock")?;
 
         let mut data = vec![];
-        lock_file.read_to_end(&mut data)?;
+        lock_file.read_to_end(&mut data).context("read lock")?;
 
         let old_data =
             std::str::from_utf8(&data).context("tinymist.lock file is not valid utf-8")?;
@@ -207,7 +207,7 @@ impl LockFile {
             }
         } else {
             let old_state = toml::from_str::<LockFileCompat>(old_data)
-                .context("tinymist.lock file is not a valid TOML file")?;
+                .context_ut("tinymist.lock file is not a valid TOML file")?;
 
             let version = old_state.version()?;
             match Version(version).partial_cmp(&Version(LOCK_VERSION)) {
@@ -244,25 +244,29 @@ impl LockFile {
         // while writing the lock file. This is sensible because `Cargo.lock` is
         // only a "resolved result" of the `Cargo.toml`. Thus, we should inform
         // users that don't only persist configuration in the lock file.
-        lock_file.file().set_len(0)?;
-        lock_file.seek(SeekFrom::Start(0))?;
-        lock_file.write_all(new_data.as_bytes())?;
+        lock_file.file().set_len(0).context(LOCK_FILENAME)?;
+        lock_file.seek(SeekFrom::Start(0)).context(LOCK_FILENAME)?;
+        lock_file
+            .write_all(new_data.as_bytes())
+            .context(LOCK_FILENAME)?;
 
         Ok(())
     }
 
     pub fn read(dir: &Path) -> Result<Self> {
-        let fs = tinymist_fs::flock::Filesystem::new(dir.to_owned());
+        let fs = tinymist_std::fs::flock::Filesystem::new(dir.to_owned());
 
-        let mut lock_file = fs.open_ro_shared(LOCK_FILENAME, "project commands")?;
+        let mut lock_file = fs
+            .open_ro_shared(LOCK_FILENAME, "project commands")
+            .context(LOCK_FILENAME)?;
 
         let mut data = vec![];
-        lock_file.read_to_end(&mut data)?;
+        lock_file.read_to_end(&mut data).context(LOCK_FILENAME)?;
 
         let data = std::str::from_utf8(&data).context("tinymist.lock file is not valid utf-8")?;
 
         let state = toml::from_str::<LockFileCompat>(data)
-            .context("tinymist.lock file is not a valid TOML file")?;
+            .context_ut("tinymist.lock file is not a valid TOML file")?;
 
         state.migrate()
     }
diff --git a/crates/tinymist-project/src/model/task.rs b/crates/tinymist-project/src/model/task.rs
index af9a01f0..8c0fb32a 100644
--- a/crates/tinymist-project/src/model/task.rs
+++ b/crates/tinymist-project/src/model/task.rs
@@ -1,6 +1,5 @@
 use std::hash::Hash;
 
-pub use anyhow::Result;
 use serde::{Deserialize, Serialize};
 use tinymist_derive::toml_model;
 
diff --git a/crates/tinymist-project/src/world.rs b/crates/tinymist-project/src/world.rs
index 445529b4..c6999687 100644
--- a/crates/tinymist-project/src/world.rs
+++ b/crates/tinymist-project/src/world.rs
@@ -15,7 +15,6 @@ use std::path::Path;
 use std::{borrow::Cow, sync::Arc};
 
 use ::typst::utils::LazyHash;
-use anyhow::Context;
 use tinymist_std::error::prelude::*;
 use tinymist_std::ImmutPath;
 use tinymist_world::font::system::SystemFontSearcher;
@@ -47,13 +46,13 @@ pub type TypstSystemWorldExtend = CompilerWorld<SystemCompilerFeatExtend>;
 
 pub trait WorldProvider {
     /// Get the entry options from the arguments.
-    fn entry(&self) -> anyhow::Result<EntryOpts>;
+    fn entry(&self) -> Result<EntryOpts>;
     /// Get a universe instance from the given arguments.
-    fn resolve(&self) -> anyhow::Result<LspUniverse>;
+    fn resolve(&self) -> Result<LspUniverse>;
 }
 
 impl WorldProvider for CompileOnceArgs {
-    fn resolve(&self) -> anyhow::Result<LspUniverse> {
+    fn resolve(&self) -> Result<LspUniverse> {
         let entry = self.entry()?.try_into()?;
         let inputs = self
             .inputs
@@ -75,7 +74,7 @@ impl WorldProvider for CompileOnceArgs {
         .context("failed to create universe")
     }
 
-    fn entry(&self) -> anyhow::Result<EntryOpts> {
+    fn entry(&self) -> Result<EntryOpts> {
         let input = self.input.as_ref().context("entry file must be provided")?;
         let input = Path::new(&input);
         let entry = if input.is_absolute() {
@@ -134,7 +133,7 @@ impl LspUniverseBuilder {
         inputs: ImmutDict,
         font_resolver: Arc<TinymistFontResolver>,
         package_registry: HttpRegistry,
-    ) -> ZResult<LspUniverse> {
+    ) -> Result<LspUniverse> {
         let registry = Arc::new(package_registry);
         let resolver = Arc::new(RegistryPathMapper::new(registry.clone()));
 
@@ -148,7 +147,7 @@ impl LspUniverseBuilder {
     }
 
     /// Resolve fonts from given options.
-    pub fn only_embedded_fonts() -> ZResult<TinymistFontResolver> {
+    pub fn only_embedded_fonts() -> Result<TinymistFontResolver> {
         let mut searcher = SystemFontSearcher::new();
         searcher.resolve_opts(CompileFontOpts {
             font_profile_cache_path: Default::default(),
@@ -160,7 +159,7 @@ impl LspUniverseBuilder {
     }
 
     /// Resolve fonts from given options.
-    pub fn resolve_fonts(args: CompileFontArgs) -> ZResult<TinymistFontResolver> {
+    pub fn resolve_fonts(args: CompileFontArgs) -> Result<TinymistFontResolver> {
         let mut searcher = SystemFontSearcher::new();
         searcher.resolve_opts(CompileFontOpts {
             font_profile_cache_path: Default::default(),
diff --git a/crates/tinymist-std/Cargo.toml b/crates/tinymist-std/Cargo.toml
index 01ec5d4f..fa42dda3 100644
--- a/crates/tinymist-std/Cargo.toml
+++ b/crates/tinymist-std/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tinymist-std"
-description = "Additional functions wrapping Rust's std library."
+description = "Additional functions wrapping Rust's standard library."
 authors.workspace = true
 version.workspace = true
 license.workspace = true
@@ -10,32 +10,54 @@ repository.workspace = true
 
 [dependencies]
 
-comemo.workspace = true
-ecow.workspace = true
-parking_lot.workspace = true
-web-time.workspace = true
-wasm-bindgen = { workspace = true, optional = true }
-js-sys = { workspace = true, optional = true }
-
-bitvec = { version = "1" }
-dashmap = { version = "5" }
-# tiny-skia-path.workspace = true
-
-path-clean.workspace = true
+anyhow.workspace = true
 base64.workspace = true
+bitvec.workspace = true
+comemo.workspace = true
+dashmap.workspace = true
+ecow.workspace = true
 fxhash.workspace = true
+log.workspace = true
+path-clean.workspace = true
+parking_lot.workspace = true
 rustc-hash.workspace = true
-siphasher.workspace = true
-
 serde = { workspace = true, features = ["derive"] }
-serde_repr = "0.1"
+serde_repr.workspace = true
 serde_json.workspace = true
 serde_with.workspace = true
+siphasher.workspace = true
+web-time.workspace = true
+tempfile = { workspace = true, optional = true }
+same-file = { workspace = true, optional = true }
+
+# feature = "web"
+js-sys = { workspace = true, optional = true }
+wasm-bindgen = { workspace = true, optional = true }
+
+# feature = "rkyv"
 rkyv = { workspace = true, optional = true }
 
+# feature = "typst"
 typst = { workspace = true, optional = true }
 typst-shim = { workspace = true, optional = true }
 
+[target.'cfg(target_os = "macos")'.dependencies]
+core-foundation.workspace = true
+
+[target.'cfg(unix)'.dependencies]
+libc.workspace = true
+
+[target.'cfg(windows)'.dependencies]
+windows-sys = { workspace = true, features = [
+    "Win32_Foundation",
+    "Win32_Security",
+    "Win32_Storage_FileSystem",
+    "Win32_System_IO",
+    "Win32_System_Console",
+    "Win32_System_JobObjects",
+    "Win32_System_Threading",
+] }
+
 [dev-dependencies]
 hex.workspace = true
 
@@ -48,13 +70,11 @@ typst = ["dep:typst", "dep:typst-shim"]
 
 rkyv = ["dep:rkyv", "rkyv/alloc", "rkyv/archive_le"]
 rkyv-validation = ["dep:rkyv", "rkyv/validation"]
-# flat-vector = ["rkyv", "rkyv-validation"]
 
 __web = ["dep:wasm-bindgen", "dep:js-sys"]
 web = ["__web"]
-system = []
+system = ["dep:tempfile", "dep:same-file"]
 bi-hash = []
-item-dashmap = []
 
 [lints]
 workspace = true
diff --git a/crates/tinymist-std/src/adt/fmap.rs b/crates/tinymist-std/src/adt/fmap.rs
index 3da19fb7..896c4460 100644
--- a/crates/tinymist-std/src/adt/fmap.rs
+++ b/crates/tinymist-std/src/adt/fmap.rs
@@ -1,3 +1,5 @@
+//! A map that shards items by their fingerprint.
+
 use std::{collections::HashMap, num::NonZeroU32};
 
 use crate::hash::Fingerprint;
@@ -31,12 +33,13 @@ fn default_shard_size() -> NonZeroU32 {
 
 type FMapBase<V> = parking_lot::RwLock<HashMap<Fingerprint, V>>;
 
-/// A map that shards items by their fingerprint.
+/// A map that shards items by their fingerprint. This is faster
+/// than the dashmap in some cases.
 ///
 /// It is fast since a fingerprint could split items into different shards
 /// efficiently.
 ///
-/// Note: If a fingerprint is calculated from a hash function, it is not
+/// Note: If a fingerprint is not calculated from a hash function, it is not
 /// guaranteed that the fingerprint is evenly distributed. Thus, in that case,
 /// the performance of this map is not guaranteed.
 pub struct FingerprintMap<V> {
@@ -76,6 +79,7 @@ impl<V> FingerprintMap<V> {
             .flat_map(|shard| shard.into_inner().into_iter())
     }
 
+    /// Get the shard
     pub fn shard(&self, fg: Fingerprint) -> &FMapBase<V> {
         let shards = &self.shards;
         let route_idx = (fg.lower32() & self.mask) as usize;
@@ -92,6 +96,7 @@ impl<V> FingerprintMap<V> {
         &mut self.shards
     }
 
+    /// Checks if the map is empty.
     pub fn contains_key(&self, fg: &Fingerprint) -> bool {
         self.shard(*fg).read().contains_key(fg)
     }
diff --git a/crates/tinymist-std/src/adt/mod.rs b/crates/tinymist-std/src/adt/mod.rs
index e6363513..c851c27b 100644
--- a/crates/tinymist-std/src/adt/mod.rs
+++ b/crates/tinymist-std/src/adt/mod.rs
@@ -1,3 +1,5 @@
+//! This module contains the implementation of the abstract data types.
+
 pub mod fmap;
 pub use fmap::FingerprintMap;
 
diff --git a/crates/tinymist-std/src/concepts/cow_mut.rs b/crates/tinymist-std/src/concepts/cow_mut.rs
index 41afd78c..08f110a4 100644
--- a/crates/tinymist-std/src/concepts/cow_mut.rs
+++ b/crates/tinymist-std/src/concepts/cow_mut.rs
@@ -1,6 +1,16 @@
+//! <https://github.com/rust-analyzer/rowan/blob/v0.16.1/src/cow_mut.rs>
+//!
+//! This module provides a `CowMut` type, which is a mutable version of `Cow`.
+//! Although it is strange that we can have a `CowMut`, because it should "copy
+//! on write", we also don't love the `Cow` API and use `Cow` without even
+//! touching its `DerefMut` feature.
+
+/// A mutable version of [Cow][`std::borrow::Cow`].
 #[derive(Debug)]
 pub enum CowMut<'a, T> {
+    /// An owned data.
     Owned(T),
+    /// A borrowed mut data.
     Borrowed(&'a mut T),
 }
 
diff --git a/crates/tinymist-std/src/concepts/hash.rs b/crates/tinymist-std/src/concepts/hash.rs
deleted file mode 100644
index cab55ba3..00000000
--- a/crates/tinymist-std/src/concepts/hash.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-//！todo: move to core/src/hash.rs
-
-use std::{
-    hash::{Hash, Hasher},
-    ops::Deref,
-};
-
-use crate::hash::item_hash128;
-
-pub trait StaticHash128 {
-    fn get_hash(&self) -> u128;
-}
-
-impl Hash for dyn StaticHash128 {
-    #[inline]
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        state.write_u128(self.get_hash());
-    }
-}
-
-pub struct HashedTrait<T: ?Sized> {
-    hash: u128,
-    t: Box<T>,
-}
-
-impl<T: ?Sized> HashedTrait<T> {
-    pub fn new(hash: u128, t: Box<T>) -> Self {
-        Self { hash, t }
-    }
-}
-
-impl<T: ?Sized> Deref for HashedTrait<T> {
-    type Target = T;
-
-    fn deref(&self) -> &Self::Target {
-        &self.t
-    }
-}
-
-impl<T> Hash for HashedTrait<T> {
-    #[inline]
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        state.write_u128(self.hash);
-    }
-}
-
-impl<T: Hash + Default + 'static> Default for HashedTrait<T> {
-    fn default() -> Self {
-        let t = T::default();
-        Self {
-            hash: item_hash128(&t),
-            t: Box::new(t),
-        }
-    }
-}
-
-impl<T: ?Sized> StaticHash128 for HashedTrait<T> {
-    fn get_hash(&self) -> u128 {
-        self.hash
-    }
-}
diff --git a/crates/tinymist-std/src/concepts/marker.rs b/crates/tinymist-std/src/concepts/marker.rs
index 7a4ed51e..d7c2b56a 100644
--- a/crates/tinymist-std/src/concepts/marker.rs
+++ b/crates/tinymist-std/src/concepts/marker.rs
@@ -7,6 +7,7 @@ use serde_with::{
 };
 use serde_with::{DeserializeAs, SerializeAs};
 
+/// A marker type for serializing and deserializing `Cow<[u8]>` as base64.
 pub struct AsCowBytes;
 
 type StdBase64 = Base64<Standard, Padded>;
diff --git a/crates/tinymist-std/src/concepts/mod.rs b/crates/tinymist-std/src/concepts/mod.rs
index f2717656..f400fbef 100644
--- a/crates/tinymist-std/src/concepts/mod.rs
+++ b/crates/tinymist-std/src/concepts/mod.rs
@@ -3,9 +3,6 @@ use std::{path::Path, sync::Arc};
 
 pub use takable::*;
 
-mod hash;
-pub use hash::*;
-
 pub mod cow_mut;
 
 mod query;
@@ -17,6 +14,9 @@ pub use read::*;
 mod marker;
 pub use marker::*;
 
+/// An immutable string.
 pub type ImmutStr = Arc<str>;
+/// An immutable byte slice.
 pub type ImmutBytes = Arc<[u8]>;
+/// An immutable path.
 pub type ImmutPath = Arc<Path>;
diff --git a/crates/tinymist-std/src/concepts/query.rs b/crates/tinymist-std/src/concepts/query.rs
index 02166248..3dd6979f 100644
--- a/crates/tinymist-std/src/concepts/query.rs
+++ b/crates/tinymist-std/src/concepts/query.rs
@@ -15,6 +15,7 @@ pub struct QueryRef<Res, Err, QueryContext = ()> {
 }
 
 impl<T, E, QC> QueryRef<T, E, QC> {
+    /// Create a new query reference with the given value.
     pub fn with_value(value: T) -> Self {
         let cell = OnceLock::new();
         cell.get_or_init(|| Ok(value));
@@ -24,6 +25,8 @@ impl<T, E, QC> QueryRef<T, E, QC> {
         }
     }
 
+    /// Create a new query reference with the given context to execute the
+    /// query.
     pub fn with_context(ctx: QC) -> Self {
         Self {
             ctx: Mutex::new(Some(ctx)),
diff --git a/crates/tinymist-std/src/concepts/read.rs b/crates/tinymist-std/src/concepts/read.rs
index e5c67a5e..0841a7f8 100644
--- a/crates/tinymist-std/src/concepts/read.rs
+++ b/crates/tinymist-std/src/concepts/read.rs
@@ -1,3 +1,5 @@
+/// A trait for reading all data from a source into a buffer.
 pub trait ReadAllOnce {
+    /// Reads all data from the source into the buffer.
     fn read_all(self, buf: &mut Vec<u8>) -> std::io::Result<usize>;
 }
diff --git a/crates/tinymist-std/src/debug_loc.rs b/crates/tinymist-std/src/debug_loc.rs
index d2f1ba22..2be65ebe 100644
--- a/crates/tinymist-std/src/debug_loc.rs
+++ b/crates/tinymist-std/src/debug_loc.rs
@@ -1,3 +1,6 @@
+//! The debug location that can be used to locate a position in a document or a
+//! file.
+
 use core::fmt;
 
 use serde::{Deserialize, Serialize};
@@ -38,6 +41,7 @@ pub type RawSourceSpan = u64;
 /// See [`CharPosition`] for the definition of the position inside a file.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct FileLocation {
+    /// The file path.
     pub filepath: String,
 }
 
@@ -73,11 +77,14 @@ impl From<Option<(usize, usize)>> for CharPosition {
 /// See [`CharPosition`] for the definition of the position inside a file.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SourceLocation {
+    /// The file path.
     pub filepath: String,
+    /// The position in the file.
     pub pos: CharPosition,
 }
 
 impl SourceLocation {
+    /// Create a new source location.
     pub fn from_flat(
         flat: FlatSourceLocation,
         i: &impl std::ops::Index<usize, Output = FileLocation>,
@@ -94,16 +101,20 @@ impl SourceLocation {
 /// See [`CharPosition`] for the definition of the position inside a file.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct FlatSourceLocation {
+    /// The file path.
     pub filepath: u32,
+    /// The position in the file.
     pub pos: CharPosition,
 }
 
-// /// A resolved file range.
-// ///
-// /// See [`CharPosition`] for the definition of the position inside a file.
+/// A resolved file range.
+///
+/// See [`CharPosition`] for the definition of the position inside a file.
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct CharRange {
+    /// The start position.
     pub start: CharPosition,
+    /// The end position.
     pub end: CharPosition,
 }
 
@@ -117,12 +128,14 @@ impl fmt::Display for CharRange {
     }
 }
 
-// /// A resolved source (text) range.
-// ///
-// /// See [`CharPosition`] for the definition of the position inside a file.
+/// A resolved source (text) range.
+///
+/// See [`CharPosition`] for the definition of the position inside a file.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SourceRange {
+    /// The file path.
     pub path: String,
+    /// The range in the file.
     pub range: CharRange,
 }
 
@@ -144,7 +157,10 @@ mod typst_ext {
     /// text or string content.
     #[derive(Debug, Clone, Copy)]
     pub struct SourceSpanOffset {
+        /// The source span.
         pub span: SourceSpan,
+        /// The offset relative to the start of the span. This is usually useful
+        /// if the location is not a span created by the parser.
         pub offset: usize,
     }
 
diff --git a/crates/tinymist-std/src/error.rs b/crates/tinymist-std/src/error.rs
index e66e75c3..7ed3085b 100644
--- a/crates/tinymist-std/src/error.rs
+++ b/crates/tinymist-std/src/error.rs
@@ -1,3 +1,5 @@
+//! Error handling utilities for the `tinymist` crate.
+
 use core::fmt;
 
 use ecow::EcoString;
@@ -5,12 +7,17 @@ use serde::{Deserialize, Serialize};
 
 use crate::debug_loc::CharRange;
 
+/// The severity of a diagnostic message, following the LSP specification.
 #[derive(serde_repr::Serialize_repr, serde_repr::Deserialize_repr, Debug, Clone)]
 #[repr(u8)]
 pub enum DiagSeverity {
+    /// An error message.
     Error = 1,
+    /// A warning message.
     Warning = 2,
+    /// An information message.
     Information = 3,
+    /// A hint message.
     Hint = 4,
 }
 
@@ -26,30 +33,41 @@ impl fmt::Display for DiagSeverity {
 }
 
 /// <https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#diagnostic>
+/// The `owner` and `source` fields are not included in the struct, but they
+/// could be added to `ErrorImpl::arguments`.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct DiagMessage {
+    /// The typst package specifier.
     pub package: String,
+    /// The file path relative to the root of the workspace or the package.
     pub path: String,
+    /// The diagnostic message.
     pub message: String,
+    /// The severity of the diagnostic message.
     pub severity: DiagSeverity,
+    /// The char range in the file. The position encoding must be negotiated.
     pub range: Option<CharRange>,
-    // These field could be added to ErrorImpl::arguments
-    // owner: Option<ImmutStr>,
-    // source: ImmutStr,
 }
 
 impl DiagMessage {}
 
+/// ALl kind of errors that can occur in the `tinymist` crate.
 #[derive(Debug, Clone)]
 #[non_exhaustive]
 pub enum ErrKind {
+    /// No message.
     None,
+    /// A string message.
     Msg(EcoString),
+    /// A source diagnostic message.
     Diag(Box<DiagMessage>),
+    /// An inner error.
     Inner(Error),
 }
 
+/// A trait to convert an error kind into an error kind.
 pub trait ErrKindExt {
+    /// Convert the error kind into an error kind.
     fn to_error_kind(self) -> ErrKind;
 }
 
@@ -65,6 +83,12 @@ impl ErrKindExt for std::io::Error {
     }
 }
 
+impl ErrKindExt for std::str::Utf8Error {
+    fn to_error_kind(self) -> ErrKind {
+        ErrKind::Msg(self.to_string().into())
+    }
+}
+
 impl ErrKindExt for String {
     fn to_error_kind(self) -> ErrKind {
         ErrKind::Msg(self.into())
@@ -101,11 +125,27 @@ impl ErrKindExt for serde_json::Error {
     }
 }
 
+impl ErrKindExt for anyhow::Error {
+    fn to_error_kind(self) -> ErrKind {
+        ErrKind::Msg(self.to_string().into())
+    }
+}
+
+impl ErrKindExt for Error {
+    fn to_error_kind(self) -> ErrKind {
+        ErrKind::Msg(self.to_string().into())
+    }
+}
+
+/// The internal error implementation.
 #[derive(Debug, Clone)]
 pub struct ErrorImpl {
+    /// A static error identifier.
     loc: &'static str,
+    /// The kind of error.
     kind: ErrKind,
-    arguments: Box<[(&'static str, String)]>,
+    /// Additional extractable arguments for the error.
+    args: Option<Box<[(&'static str, String)]>>,
 }
 
 /// This type represents all possible errors that can occur in typst.ts
@@ -118,43 +158,65 @@ pub struct Error {
 }
 
 impl Error {
-    pub fn new(loc: &'static str, kind: ErrKind, arguments: Box<[(&'static str, String)]>) -> Self {
+    /// Creates a new error.
+    pub fn new(
+        loc: &'static str,
+        kind: ErrKind,
+        args: Option<Box<[(&'static str, String)]>>,
+    ) -> Self {
         Self {
-            err: Box::new(ErrorImpl {
-                loc,
-                kind,
-                arguments,
-            }),
+            err: Box::new(ErrorImpl { loc, kind, args }),
         }
     }
 
+    /// Returns the location of the error.
     pub fn loc(&self) -> &'static str {
         self.err.loc
     }
 
+    /// Returns the kind of the error.
     pub fn kind(&self) -> &ErrKind {
         &self.err.kind
     }
 
+    /// Returns the arguments of the error.
     pub fn arguments(&self) -> &[(&'static str, String)] {
-        &self.err.arguments
+        self.err.args.as_deref().unwrap_or_default()
     }
 }
 
 impl fmt::Display for Error {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let err = &self.err;
-        match &err.kind {
-            ErrKind::Msg(msg) => write!(f, "{}: {} with {:?}", err.loc, msg, err.arguments),
-            ErrKind::Diag(diag) => {
-                write!(f, "{}: {} with {:?}", err.loc, diag.message, err.arguments)
+
+        if err.loc.is_empty() {
+            match &err.kind {
+                ErrKind::Msg(msg) => write!(f, "{msg} with {:?}", err.args),
+                ErrKind::Diag(diag) => {
+                    write!(f, "{} with {:?}", diag.message, err.args)
+                }
+                ErrKind::Inner(e) => write!(f, "{e} with {:?}", err.args),
+                ErrKind::None => write!(f, "error with {:?}", err.args),
+            }
+        } else {
+            match &err.kind {
+                ErrKind::Msg(msg) => write!(f, "{}: {} with {:?}", err.loc, msg, err.args),
+                ErrKind::Diag(diag) => {
+                    write!(f, "{}: {} with {:?}", err.loc, diag.message, err.args)
+                }
+                ErrKind::Inner(e) => write!(f, "{}: {} with {:?}", err.loc, e, err.args),
+                ErrKind::None => write!(f, "{}: with {:?}", err.loc, err.args),
             }
-            ErrKind::Inner(e) => write!(f, "{}: {} with {:?}", err.loc, e, err.arguments),
-            ErrKind::None => write!(f, "{}: with {:?}", err.loc, err.arguments),
         }
     }
 }
 
+impl From<anyhow::Error> for Error {
+    fn from(e: anyhow::Error) -> Self {
+        Error::new("", e.to_string().to_error_kind(), None)
+    }
+}
+
 impl std::error::Error for Error {}
 
 #[cfg(feature = "web")]
@@ -178,47 +240,94 @@ impl From<&Error> for wasm_bindgen::JsValue {
     }
 }
 
+/// The result type used in the `tinymist` crate.
+pub type Result<T, Err = Error> = std::result::Result<T, Err>;
+
+/// A trait to add context to a result.
+pub trait WithContext<T>: Sized {
+    /// Add a context to the result.
+    fn context(self, loc: &'static str) -> Result<T>;
+
+    /// Add a context to the result with additional arguments.
+    fn with_context<F>(self, loc: &'static str, f: F) -> Result<T>
+    where
+        F: FnOnce() -> Option<Box<[(&'static str, String)]>>;
+}
+
+impl<T, E: ErrKindExt> WithContext<T> for Result<T, E> {
+    fn context(self, loc: &'static str) -> Result<T> {
+        self.map_err(|e| Error::new(loc, e.to_error_kind(), None))
+    }
+
+    fn with_context<F>(self, loc: &'static str, f: F) -> Result<T>
+    where
+        F: FnOnce() -> Option<Box<[(&'static str, String)]>>,
+    {
+        self.map_err(|e| Error::new(loc, e.to_error_kind(), f()))
+    }
+}
+
+impl<T> WithContext<T> for Option<T> {
+    fn context(self, loc: &'static str) -> Result<T> {
+        self.ok_or_else(|| Error::new(loc, ErrKind::None, None))
+    }
+
+    fn with_context<F>(self, loc: &'static str, f: F) -> Result<T>
+    where
+        F: FnOnce() -> Option<Box<[(&'static str, String)]>>,
+    {
+        self.ok_or_else(|| Error::new(loc, ErrKind::None, f()))
+    }
+}
+
+/// A trait to add context to a result without a specific error type.
+pub trait WithContextUntyped<T>: Sized {
+    /// Add a context to the result.
+    fn context_ut(self, loc: &'static str) -> Result<T>;
+
+    /// Add a context to the result with additional arguments.
+    fn with_context_ut<F>(self, loc: &'static str, f: F) -> Result<T>
+    where
+        F: FnOnce() -> Option<Box<[(&'static str, String)]>>;
+}
+
+impl<T, E: std::fmt::Display> WithContextUntyped<T> for Result<T, E> {
+    fn context_ut(self, loc: &'static str) -> Result<T> {
+        self.map_err(|e| Error::new(loc, ErrKind::Msg(ecow::eco_format!("{e}")), None))
+    }
+
+    fn with_context_ut<F>(self, loc: &'static str, f: F) -> Result<T>
+    where
+        F: FnOnce() -> Option<Box<[(&'static str, String)]>>,
+    {
+        self.map_err(|e| Error::new(loc, ErrKind::Msg(ecow::eco_format!("{e}")), f()))
+    }
+}
+
+/// The error prelude.
 pub mod prelude {
+    #![allow(missing_docs)]
+
     use super::ErrKindExt;
     use crate::Error;
 
-    pub type ZResult<T> = Result<T, Error>;
-
-    pub trait WithContext<T>: Sized {
-        fn context(self, loc: &'static str) -> ZResult<T>;
-
-        fn with_context<F>(self, loc: &'static str, f: F) -> ZResult<T>
-        where
-            F: FnOnce() -> Box<[(&'static str, String)]>;
-    }
-
-    impl<T, E: ErrKindExt> WithContext<T> for Result<T, E> {
-        fn context(self, loc: &'static str) -> ZResult<T> {
-            self.map_err(|e| Error::new(loc, e.to_error_kind(), Box::new([])))
-        }
-
-        fn with_context<F>(self, loc: &'static str, f: F) -> ZResult<T>
-        where
-            F: FnOnce() -> Box<[(&'static str, String)]>,
-        {
-            self.map_err(|e| Error::new(loc, e.to_error_kind(), f()))
-        }
-    }
+    pub use super::{WithContext, WithContextUntyped};
+    pub use crate::Result;
 
     pub fn map_string_err<T: ToString>(loc: &'static str) -> impl Fn(T) -> Error {
-        move |e| Error::new(loc, e.to_string().to_error_kind(), Box::new([]))
+        move |e| Error::new(loc, e.to_string().to_error_kind(), None)
     }
 
     pub fn map_into_err<S: ErrKindExt, T: Into<S>>(loc: &'static str) -> impl Fn(T) -> Error {
-        move |e| Error::new(loc, e.into().to_error_kind(), Box::new([]))
+        move |e| Error::new(loc, e.into().to_error_kind(), None)
     }
 
     pub fn map_err<T: ErrKindExt>(loc: &'static str) -> impl Fn(T) -> Error {
-        move |e| Error::new(loc, e.to_error_kind(), Box::new([]))
+        move |e| Error::new(loc, e.to_error_kind(), None)
     }
 
     pub fn wrap_err(loc: &'static str) -> impl Fn(Error) -> Error {
-        move |e| Error::new(loc, crate::ErrKind::Inner(e), Box::new([]))
+        move |e| Error::new(loc, crate::ErrKind::Inner(e), None)
     }
 
     pub fn map_string_err_with_args<
@@ -226,13 +335,13 @@ pub mod prelude {
         Args: IntoIterator<Item = (&'static str, String)>,
     >(
         loc: &'static str,
-        arguments: Args,
+        args: Args,
     ) -> impl FnOnce(T) -> Error {
         move |e| {
             Error::new(
                 loc,
                 e.to_string().to_error_kind(),
-                arguments.into_iter().collect::<Vec<_>>().into_boxed_slice(),
+                Some(args.into_iter().collect::<Vec<_>>().into_boxed_slice()),
             )
         }
     }
@@ -243,49 +352,49 @@ pub mod prelude {
         Args: IntoIterator<Item = (&'static str, String)>,
     >(
         loc: &'static str,
-        arguments: Args,
+        args: Args,
     ) -> impl FnOnce(T) -> Error {
         move |e| {
             Error::new(
                 loc,
                 e.into().to_error_kind(),
-                arguments.into_iter().collect::<Vec<_>>().into_boxed_slice(),
+                Some(args.into_iter().collect::<Vec<_>>().into_boxed_slice()),
             )
         }
     }
 
     pub fn map_err_with_args<T: ErrKindExt, Args: IntoIterator<Item = (&'static str, String)>>(
         loc: &'static str,
-        arguments: Args,
+        args: Args,
     ) -> impl FnOnce(T) -> Error {
         move |e| {
             Error::new(
                 loc,
                 e.to_error_kind(),
-                arguments.into_iter().collect::<Vec<_>>().into_boxed_slice(),
+                Some(args.into_iter().collect::<Vec<_>>().into_boxed_slice()),
             )
         }
     }
 
     pub fn wrap_err_with_args<Args: IntoIterator<Item = (&'static str, String)>>(
         loc: &'static str,
-        arguments: Args,
+        args: Args,
     ) -> impl FnOnce(Error) -> Error {
         move |e| {
             Error::new(
                 loc,
                 crate::ErrKind::Inner(e),
-                arguments.into_iter().collect::<Vec<_>>().into_boxed_slice(),
+                Some(args.into_iter().collect::<Vec<_>>().into_boxed_slice()),
             )
         }
     }
 
     pub fn _error_once(loc: &'static str, args: Box<[(&'static str, String)]>) -> Error {
-        Error::new(loc, crate::ErrKind::None, args)
+        Error::new(loc, crate::ErrKind::None, Some(args))
     }
 
     pub fn _msg(loc: &'static str, msg: EcoString) -> Error {
-        Error::new(loc, crate::ErrKind::Msg(msg), Box::new([]))
+        Error::new(loc, crate::ErrKind::Msg(msg), None)
     }
 
     pub use ecow::eco_format as _eco_format;
diff --git a/crates/tinymist-fs/src/lib.rs b/crates/tinymist-std/src/fs.rs
similarity index 55%
rename from crates/tinymist-fs/src/lib.rs
rename to crates/tinymist-std/src/fs.rs
index 70260ac4..27355ec9 100644
--- a/crates/tinymist-fs/src/lib.rs
+++ b/crates/tinymist-std/src/fs.rs
@@ -1,7 +1,6 @@
 //! Filesystem support for tinymist.
 
+#[cfg(feature = "system")]
 pub mod flock;
+#[cfg(feature = "system")]
 pub mod paths;
-
-mod errors;
-pub use errors::*;
diff --git a/crates/tinymist-fs/src/flock.rs b/crates/tinymist-std/src/fs/flock.rs
similarity index 99%
rename from crates/tinymist-fs/src/flock.rs
rename to crates/tinymist-std/src/fs/flock.rs
index 8c087144..3d296244 100644
--- a/crates/tinymist-fs/src/flock.rs
+++ b/crates/tinymist-std/src/fs/flock.rs
@@ -13,10 +13,10 @@ use std::io;
 use std::io::{Read, Seek, SeekFrom, Write};
 use std::path::{Display, Path, PathBuf};
 
-use crate::errors::Result;
-use crate::paths;
+use self::sys::*;
+use super::paths;
 use anyhow::Context as _;
-use sys::*;
+use anyhow::Result;
 
 /// A locked file.
 ///
diff --git a/crates/tinymist-fs/src/paths.rs b/crates/tinymist-std/src/fs/paths.rs
similarity index 99%
rename from crates/tinymist-fs/src/paths.rs
rename to crates/tinymist-std/src/fs/paths.rs
index f461a94d..91b87031 100644
--- a/crates/tinymist-fs/src/paths.rs
+++ b/crates/tinymist-std/src/fs/paths.rs
@@ -1,7 +1,6 @@
 //! Upstream: <https://github.com/rust-lang/cargo/blob/rust-1.83.0/crates/cargo-util/src/paths.rs>
 //! Various utilities for working with files and paths.
 
-use anyhow::{Context, Result};
 use std::env;
 use std::ffi::{OsStr, OsString};
 use std::fs::{self, File, Metadata, OpenOptions};
@@ -9,6 +8,8 @@ use std::io;
 use std::io::prelude::*;
 use std::iter;
 use std::path::{Component, Path, PathBuf};
+
+use anyhow::{Context, Result};
 use tempfile::Builder as TempFileBuilder;
 
 /// Joins paths into a string suitable for the `PATH` environment variable.
diff --git a/crates/tinymist-std/src/hash.rs b/crates/tinymist-std/src/hash.rs
index e0c624b5..f356f9fc 100644
--- a/crates/tinymist-std/src/hash.rs
+++ b/crates/tinymist-std/src/hash.rs
@@ -1,8 +1,10 @@
+//! The hash extension module. It provides extra concepts like `Fingerprint` and
+//! `HashedTrait`.
+
 use core::fmt;
-use std::{
-    any::Any,
-    hash::{Hash, Hasher},
-};
+use std::any::Any;
+use std::hash::{Hash, Hasher};
+use std::ops::Deref;
 
 use base64::Engine;
 use fxhash::FxHasher32;
@@ -11,12 +13,13 @@ use siphasher::sip128::{Hasher128, SipHasher13};
 #[cfg(feature = "rkyv")]
 use rkyv::{Archive, Deserialize as rDeser, Serialize as rSer};
 
-use crate::error::prelude::ZResult;
+use crate::error::prelude::Result;
 
 pub(crate) type FxBuildHasher = std::hash::BuildHasherDefault<FxHasher>;
 pub use rustc_hash::{FxHashMap, FxHashSet, FxHasher};
 // pub type FxIndexSet<K> = indexmap::IndexSet<K, FxHasher>;
 // pub type FxIndexMap<K, V> = indexmap::IndexMap<K, V, FxHasher>;
+/// A dashmap that uses the FxHasher as the underlying hasher.
 pub type FxDashMap<K, V> = dashmap::DashMap<K, V, FxBuildHasher>;
 
 /// See <https://github.com/rust-lang/rust/blob/master/compiler/rustc_hir/src/stable_hash_impls.rs#L22>
@@ -85,7 +88,7 @@ impl Fingerprint {
     }
 
     /// Creates a new `Fingerprint` from a svg id that **doesn't have prefix**.
-    pub fn try_from_str(s: &str) -> ZResult<Self> {
+    pub fn try_from_str(s: &str) -> Result<Self> {
         let bytes = base64::engine::general_purpose::STANDARD_NO_PAD
             .decode(&s.as_bytes()[..11])
             .expect("invalid base64 string");
@@ -135,9 +138,11 @@ pub struct FingerprintSipHasher {
     data: Vec<u8>,
 }
 
+/// The base hasher for the [`FingerprintSipHasher`].
 pub type FingerprintSipHasherBase = SipHasher13;
 
 impl FingerprintSipHasher {
+    /// Get the fast hash value and the underlying data.
     pub fn fast_hash(&self) -> (u32, &Vec<u8>) {
         let mut inner = FxHasher32::default();
         self.data.hash(&mut inner);
@@ -187,6 +192,7 @@ pub struct FingerprintBuilder {
 
 #[cfg(not(feature = "bi-hash"))]
 impl FingerprintBuilder {
+    /// Resolve the fingerprint without checking the conflict.
     pub fn resolve_unchecked<T: Hash>(&self, item: &T) -> Fingerprint {
         let mut s = FingerprintSipHasher { data: Vec::new() };
         item.hash(&mut s);
@@ -194,6 +200,7 @@ impl FingerprintBuilder {
         fingerprint
     }
 
+    /// Resolve the fingerprint and check the conflict.
     pub fn resolve<T: Hash + 'static>(&self, item: &T) -> Fingerprint {
         let mut s = FingerprintSipHasher { data: Vec::new() };
         item.type_id().hash(&mut s);
@@ -216,6 +223,7 @@ impl FingerprintBuilder {
 
 #[cfg(feature = "bi-hash")]
 impl FingerprintBuilder {
+    /// Resolve the fingerprint without checking the conflict.
     pub fn resolve_unchecked<T: Hash>(&self, item: &T) -> Fingerprint {
         let mut s = FingerprintSipHasher { data: Vec::new() };
         item.hash(&mut s);
@@ -233,6 +241,7 @@ impl FingerprintBuilder {
         fingerprint
     }
 
+    /// Resolve the fingerprint and check the conflict.
     pub fn resolve<T: Hash + 'static>(&self, item: &T) -> Fingerprint {
         let mut s = FingerprintSipHasher { data: Vec::new() };
         item.type_id().hash(&mut s);
@@ -297,6 +306,66 @@ pub fn hash64<T: Hash + ?Sized>(v: &T) -> u64 {
 // todo: rustc hash doesn't have 32-bit hash
 pub use fxhash::hash32;
 
+/// A trait that provides a static prehashed 128-bit hash.
+pub trait StaticHash128 {
+    /// Get the prehashed 128-bit hash.
+    fn get_hash(&self) -> u128;
+}
+
+impl Hash for dyn StaticHash128 {
+    #[inline]
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        state.write_u128(self.get_hash());
+    }
+}
+
+/// A trait that provides a static prehashed 64-bit hash for any internal `T`.
+///
+/// Please ensure that the `T` is really mapped to the hash. Use it at your own
+/// risk.
+pub struct HashedTrait<T: ?Sized> {
+    hash: u128,
+    t: Box<T>,
+}
+
+impl<T: ?Sized> HashedTrait<T> {
+    /// Create a new `HashedTrait` with the given hash and the trait object.
+    pub fn new(hash: u128, t: Box<T>) -> Self {
+        Self { hash, t }
+    }
+}
+
+impl<T: ?Sized> Deref for HashedTrait<T> {
+    type Target = T;
+
+    fn deref(&self) -> &Self::Target {
+        &self.t
+    }
+}
+
+impl<T> Hash for HashedTrait<T> {
+    #[inline]
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        state.write_u128(self.hash);
+    }
+}
+
+impl<T: Hash + Default + 'static> Default for HashedTrait<T> {
+    fn default() -> Self {
+        let t = T::default();
+        Self {
+            hash: item_hash128(&t),
+            t: Box::new(t),
+        }
+    }
+}
+
+impl<T: ?Sized> StaticHash128 for HashedTrait<T> {
+    fn get_hash(&self) -> u128 {
+        self.hash
+    }
+}
+
 #[test]
 fn test_fingerprint() {
     let t = Fingerprint::from_pair(0, 1);
diff --git a/crates/tinymist-std/src/lib.rs b/crates/tinymist-std/src/lib.rs
index 037b3911..d29082ab 100644
--- a/crates/tinymist-std/src/lib.rs
+++ b/crates/tinymist-std/src/lib.rs
@@ -1,8 +1,9 @@
-#![allow(missing_docs)]
+//! Additional functions wrapping Rust's standard library.
 
 pub mod adt;
 pub mod debug_loc;
 pub mod error;
+pub mod fs;
 pub mod hash;
 pub mod path;
 pub mod time;
@@ -11,7 +12,7 @@ pub(crate) mod concepts;
 
 pub use concepts::*;
 
-pub use error::{ErrKind, Error};
+pub use error::{ErrKind, Error, Result};
 
 #[cfg(feature = "typst")]
 pub use typst_shim;
@@ -19,8 +20,8 @@ pub use typst_shim;
 #[cfg(feature = "rkyv")]
 use rkyv::{Archive, Deserialize as rDeser, Serialize as rSer};
 
-/// The local id of a svg item.
-/// This id is only unique within the svg document.
+/// The local id of an item.
+/// This id is only unique within a task or process.
 #[derive(Debug, Clone, Copy, Hash, PartialEq, Eq)]
 #[cfg_attr(feature = "rkyv", derive(Archive, rDeser, rSer))]
 #[cfg_attr(feature = "rkyv-validation", archive(check_bytes))]
diff --git a/crates/tinymist-std/src/path.rs b/crates/tinymist-std/src/path.rs
index 9f4a0bb3..a6707e7e 100644
--- a/crates/tinymist-std/src/path.rs
+++ b/crates/tinymist-std/src/path.rs
@@ -1,3 +1,5 @@
+//! Path utilities.
+
 use std::path::{Component, Path};
 
 pub use path_clean::PathClean;
diff --git a/crates/tinymist-std/src/time.rs b/crates/tinymist-std/src/time.rs
index 0a439fe8..69272878 100644
--- a/crates/tinymist-std/src/time.rs
+++ b/crates/tinymist-std/src/time.rs
@@ -1,3 +1,5 @@
+//! Cross platform time utilities.
+
 pub use std::time::SystemTime as Time;
 pub use web_time::Duration;
 pub use web_time::Instant;
diff --git a/crates/tinymist-world/src/entry.rs b/crates/tinymist-world/src/entry.rs
index b9137a0b..913f2633 100644
--- a/crates/tinymist-world/src/entry.rs
+++ b/crates/tinymist-world/src/entry.rs
@@ -113,7 +113,7 @@ impl EntryState {
         }
     }
 
-    pub fn try_select_path_in_workspace(&self, p: &Path) -> ZResult<Option<EntryState>> {
+    pub fn try_select_path_in_workspace(&self, p: &Path) -> Result<Option<EntryState>> {
         Ok(match self.workspace_root() {
             Some(root) => match p.strip_prefix(&root) {
                 Ok(p) => Some(EntryState::new_rooted(
diff --git a/crates/tinymist-world/src/font/system.rs b/crates/tinymist-world/src/font/system.rs
index 418494a8..1d3703eb 100644
--- a/crates/tinymist-world/src/font/system.rs
+++ b/crates/tinymist-world/src/font/system.rs
@@ -105,7 +105,7 @@ impl SystemFontSearcher {
     }
 
     /// Resolve fonts from given options.
-    pub fn resolve_opts(&mut self, opts: CompileFontOpts) -> ZResult<()> {
+    pub fn resolve_opts(&mut self, opts: CompileFontOpts) -> Result<()> {
         if opts
             .font_profile_cache_path
             .to_str()
diff --git a/crates/tinymist-world/src/font/web/mod.rs b/crates/tinymist-world/src/font/web/mod.rs
index a4ff1a6b..7dadf2d4 100644
--- a/crates/tinymist-world/src/font/web/mod.rs
+++ b/crates/tinymist-world/src/font/web/mod.rs
@@ -21,7 +21,7 @@ pub(crate) fn convert_pair(pair: JsValue) -> (JsValue, JsValue) {
 }
 struct FontBuilder {}
 
-fn font_family_web_to_typst(family: &str, full_name: &str) -> ZResult<String> {
+fn font_family_web_to_typst(family: &str, full_name: &str) -> Result<String> {
     let mut family = family;
     if family.starts_with("Noto")
         || family.starts_with("NewCM")
@@ -51,7 +51,7 @@ fn infer_info_from_web_font(
         postscript_name,
         style,
     }: WebFontInfo,
-) -> ZResult<FontInfo> {
+) -> Result<FontInfo> {
     let family = font_family_web_to_typst(&family, &full_name)?;
 
     let mut full = full_name;
@@ -237,7 +237,7 @@ impl FontBuilder {
     // {:?}", field, val)))         .unwrap())
     // }
 
-    fn to_string(&self, field: &str, val: &JsValue) -> ZResult<String> {
+    fn to_string(&self, field: &str, val: &JsValue) -> Result<String> {
         Ok(val
             .as_string()
             .ok_or_else(|| JsValue::from_str(&format!("expected string for {field}, got {val:?}")))
@@ -247,7 +247,7 @@ impl FontBuilder {
     fn font_web_to_typst(
         &self,
         val: &JsValue,
-    ) -> ZResult<(JsValue, js_sys::Function, Vec<typst::text::FontInfo>)> {
+    ) -> Result<(JsValue, js_sys::Function, Vec<typst::text::FontInfo>)> {
         let mut postscript_name = String::new();
         let mut family = String::new();
         let mut full_name = String::new();
@@ -414,7 +414,7 @@ impl BrowserFontSearcher {
         }
     }
 
-    pub async fn add_web_fonts(&mut self, fonts: js_sys::Array) -> ZResult<()> {
+    pub async fn add_web_fonts(&mut self, fonts: js_sys::Array) -> Result<()> {
         let font_builder = FontBuilder {};
 
         for v in fonts.iter() {
@@ -451,7 +451,7 @@ impl BrowserFontSearcher {
         }
     }
 
-    pub async fn add_glyph_pack(&mut self) -> ZResult<()> {
+    pub async fn add_glyph_pack(&mut self) -> Result<()> {
         Err(error_once!(
             "BrowserFontSearcher.add_glyph_pack is not implemented"
         ))
diff --git a/crates/tinymist-world/src/system.rs b/crates/tinymist-world/src/system.rs
index d8792805..4c81d68b 100644
--- a/crates/tinymist-world/src/system.rs
+++ b/crates/tinymist-world/src/system.rs
@@ -32,7 +32,7 @@ impl TypstSystemUniverse {
     /// Create [`TypstSystemWorld`] with the given options.
     /// See SystemCompilerFeat for instantiation details.
     /// See [`CompileOpts`] for available options.
-    pub fn new(mut opts: CompileOpts) -> ZResult<Self> {
+    pub fn new(mut opts: CompileOpts) -> Result<Self> {
         let registry: Arc<HttpRegistry> = Arc::default();
         let resolver = Arc::new(RegistryPathMapper::new(registry.clone()));
         let inputs = std::mem::take(&mut opts.inputs);
@@ -46,7 +46,7 @@ impl TypstSystemUniverse {
     }
 
     /// Resolve fonts from given options.
-    fn resolve_fonts(opts: CompileOpts) -> ZResult<FontResolverImpl> {
+    fn resolve_fonts(opts: CompileOpts) -> Result<FontResolverImpl> {
         let mut searcher = SystemFontSearcher::new();
         searcher.resolve_opts(opts.into())?;
         Ok(searcher.into())
diff --git a/crates/tinymist-world/src/world.rs b/crates/tinymist-world/src/world.rs
index 868b0a70..f43a7f06 100644
--- a/crates/tinymist-world/src/world.rs
+++ b/crates/tinymist-world/src/world.rs
@@ -190,7 +190,7 @@ impl<F: CompilerFeat> CompilerUniverse<F> {
         &self,
         file_path: Option<String>,
         encoding: OffsetEncoding,
-    ) -> ZResult<Arc<Vec<SemanticToken>>> {
+    ) -> Result<Arc<Vec<SemanticToken>>> {
         let world = match file_path {
             Some(e) => {
                 let path = Path::new(&e);
diff --git a/crates/tinymist/Cargo.toml b/crates/tinymist/Cargo.toml
index 136c2cb9..836ad2f9 100644
--- a/crates/tinymist/Cargo.toml
+++ b/crates/tinymist/Cargo.toml
@@ -60,7 +60,6 @@ strum.workspace = true
 sync-lsp.workspace = true
 tinymist-assets = { workspace = true }
 tinymist-query.workspace = true
-tinymist-fs.workspace = true
 tinymist-std.workspace = true
 tinymist-core = { workspace = true, default-features = false, features = [] }
 tinymist-project.workspace = true
diff --git a/crates/tinymist/src/lib.rs b/crates/tinymist/src/lib.rs
index dbd23cb0..e436a5ae 100644
--- a/crates/tinymist/src/lib.rs
+++ b/crates/tinymist/src/lib.rs
@@ -42,13 +42,14 @@ pub use world::{CompileFontArgs, CompileOnceArgs, CompilePackageArgs};
 use lsp_server::{RequestId, ResponseError};
 use serde_json::from_value;
 use sync_lsp::*;
+use tinymist_std::error::Result;
 use utils::*;
 use world::*;
 
 use tinymist_query::CompilerQueryResponse;
 
 /// The future type for a lsp query.
-pub type QueryFuture = anyhow::Result<ResponseFuture<anyhow::Result<CompilerQueryResponse>>>;
+pub type QueryFuture = Result<ResponseFuture<Result<CompilerQueryResponse>>>;
 
 trait LspClientExt {
     fn schedule_query(&self, req_id: RequestId, query_fut: QueryFuture) -> ScheduledResult;
diff --git a/crates/tinymist/src/main.rs b/crates/tinymist/src/main.rs
index 58604efd..9d0d3b06 100644
--- a/crates/tinymist/src/main.rs
+++ b/crates/tinymist/src/main.rs
@@ -9,7 +9,6 @@ use std::{
     sync::Arc,
 };
 
-use anyhow::{bail, Context};
 use clap::Parser;
 use clap_builder::CommandFactory;
 use clap_complete::generate;
@@ -32,6 +31,7 @@ use tinymist::{world::TaskInputs, world::WorldProvider};
 use tinymist_core::LONG_VERSION;
 use tinymist_project::EntryResolver;
 use tinymist_query::package::PackageInfo;
+use tinymist_std::{bail, error::prelude::*};
 use typst::foundations::IntoValue;
 use typst_shim::utils::LazyHash;
 
@@ -61,7 +61,7 @@ impl Default for Runtimes {
 static RUNTIMES: Lazy<Runtimes> = Lazy::new(Default::default);
 
 /// The main entry point.
-fn main() -> anyhow::Result<()> {
+fn main() -> Result<()> {
     #[cfg(feature = "dhat-heap")]
     let _profiler = dhat::Profiler::new_heap();
 
@@ -103,9 +103,9 @@ fn main() -> anyhow::Result<()> {
 }
 
 /// Generates completion script to stdout.
-pub fn completion(args: ShellCompletionArgs) -> anyhow::Result<()> {
+pub fn completion(args: ShellCompletionArgs) -> Result<()> {
     let Some(shell) = args.shell.or_else(Shell::from_env) else {
-        anyhow::bail!("could not infer shell");
+        tinymist_std::bail!("could not infer shell");
     };
 
     let mut cmd = CliArguments::command();
@@ -115,7 +115,7 @@ pub fn completion(args: ShellCompletionArgs) -> anyhow::Result<()> {
 }
 
 /// Runs compilation
-pub fn compile(args: CompileArgs) -> anyhow::Result<()> {
+pub fn compile(args: CompileArgs) -> Result<()> {
     use std::io::Write;
 
     let input = args
@@ -150,7 +150,7 @@ pub fn compile(args: CompileArgs) -> anyhow::Result<()> {
 }
 
 /// The main entry point for the language server.
-pub fn lsp_main(args: LspArgs) -> anyhow::Result<()> {
+pub fn lsp_main(args: LspArgs) -> Result<()> {
     let pairs = LONG_VERSION.trim().split('\n');
     let pairs = pairs
         .map(|e| e.splitn(2, ":").map(|e| e.trim()).collect::<Vec<_>>())
@@ -178,19 +178,19 @@ pub fn lsp_main(args: LspArgs) -> anyhow::Result<()> {
 }
 
 /// The main entry point for the compiler.
-pub fn trace_lsp_main(args: TraceLspArgs) -> anyhow::Result<()> {
+pub fn trace_lsp_main(args: TraceLspArgs) -> Result<()> {
     let mut input = PathBuf::from(match args.compile.input {
         Some(value) => value,
-        None => return Err(anyhow::anyhow!("provide a valid path")),
+        None => Err(anyhow::anyhow!("provide a valid path"))?,
     });
 
     let mut root_path = args.compile.root.unwrap_or(PathBuf::from("."));
 
     if root_path.is_relative() {
-        root_path = std::env::current_dir()?.join(root_path);
+        root_path = std::env::current_dir().context("cwd")?.join(root_path);
     }
     if input.is_relative() {
-        input = std::env::current_dir()?.join(input);
+        input = std::env::current_dir().context("cwd")?.join(input);
     }
     if !input.starts_with(&root_path) {
         bail!("input file is not within the root path: {input:?} not in {root_path:?}");
@@ -233,7 +233,7 @@ pub fn trace_lsp_main(args: TraceLspArgs) -> anyhow::Result<()> {
 
         let resp = service.ready(()).unwrap();
         let MaybeDone::Done(resp) = resp else {
-            bail!("internal error: not sync init")
+            anyhow::bail!("internal error: not sync init")
         };
         resp.unwrap();
 
@@ -274,7 +274,7 @@ pub fn trace_lsp_main(args: TraceLspArgs) -> anyhow::Result<()> {
 }
 
 /// The main entry point for language server queries.
-pub fn query_main(cmds: QueryCommands) -> anyhow::Result<()> {
+pub fn query_main(cmds: QueryCommands) -> Result<()> {
     use tinymist_project::package::PackageRegistry;
 
     with_stdio_transport(MirrorArgs::default(), |conn| {
@@ -297,7 +297,7 @@ pub fn query_main(cmds: QueryCommands) -> anyhow::Result<()> {
 
         let resp = service.ready(()).unwrap();
         let MaybeDone::Done(resp) = resp else {
-            bail!("internal error: not sync init")
+            anyhow::bail!("internal error: not sync init")
         };
         resp.unwrap();
 
diff --git a/crates/tinymist/src/project.rs b/crates/tinymist/src/project.rs
index c6f9ab14..262c1534 100644
--- a/crates/tinymist/src/project.rs
+++ b/crates/tinymist/src/project.rs
@@ -23,8 +23,7 @@ pub use tinymist_project::*;
 
 use std::sync::Arc;
 
-use anyhow::bail;
-use log::{error, info, trace};
+use log::{error, trace};
 use parking_lot::Mutex;
 use reflexo::{hash::FxHashMap, path::unix_slash};
 use reflexo_typst::{typst::prelude::EcoVec, CompileReport};
@@ -34,9 +33,9 @@ use tinymist_query::{
     CompilerQueryRequest, CompilerQueryResponse, DiagnosticsMap, SemanticRequest, StatefulRequest,
     VersionedDocument,
 };
-use tinymist_std::error::prelude::*;
+use tinymist_std::{bail, error::prelude::*};
 use tokio::sync::{mpsc, oneshot};
-use typst::{diag::SourceDiagnostic, World};
+use typst::diag::SourceDiagnostic;
 
 use crate::actor::editor::{CompileStatus, DocVersion, EditorRequest, TinymistCompileStatusEnum};
 use crate::stats::{CompilerQueryStats, QueryStatGuard};
@@ -100,7 +99,7 @@ pub struct Project {
 
 impl Project {
     /// Snapshot the compiler thread for tasks
-    pub fn snapshot(&mut self) -> ZResult<WorldSnapFut> {
+    pub fn snapshot(&mut self) -> Result<WorldSnapFut> {
         let (tx, rx) = oneshot::channel();
         let snap = self.state.snapshot();
         let _ = tx.send(snap);
@@ -109,7 +108,7 @@ impl Project {
     }
 
     /// Snapshot the compiler thread for language queries
-    pub fn query_snapshot(&mut self, q: Option<&CompilerQueryRequest>) -> ZResult<QuerySnapFut> {
+    pub fn query_snapshot(&mut self, q: Option<&CompilerQueryRequest>) -> Result<QuerySnapFut> {
         let fut = self.snapshot()?;
         let analysis = self.analysis.clone();
         let rev_lock = analysis.lock_revision(q);
@@ -150,7 +149,7 @@ impl Project {
         &mut self,
         group: &str,
         entry: EntryState,
-    ) -> ZResult<ProjectInsId> {
+    ) -> Result<ProjectInsId> {
         self.state.restart_dedicate(group, entry)
     }
 }
@@ -367,7 +366,7 @@ pub struct WorldSnapFut {
 
 impl WorldSnapFut {
     /// wait for the snapshot to be ready
-    pub async fn receive(self) -> ZResult<CompileSnapshot<LspCompilerFeat>> {
+    pub async fn receive(self) -> Result<CompileSnapshot<LspCompilerFeat>> {
         self.rx
             .await
             .map_err(map_string_err("failed to get snapshot"))
@@ -382,7 +381,7 @@ pub struct QuerySnapFut {
 
 impl QuerySnapFut {
     /// wait for the snapshot to be ready
-    pub async fn receive(self) -> ZResult<QuerySnap> {
+    pub async fn receive(self) -> Result<QuerySnap> {
         let snap = self.fut.receive().await?;
         Ok(QuerySnap {
             snap,
@@ -416,7 +415,7 @@ impl QuerySnap {
         self,
         query: T,
         wrapper: fn(Option<T::Response>) -> CompilerQueryResponse,
-    ) -> anyhow::Result<CompilerQueryResponse> {
+    ) -> Result<CompilerQueryResponse> {
         let doc = self.snap.success_doc.as_ref().map(|doc| VersionedDocument {
             version: self.world.revision().get(),
             document: doc.clone(),
@@ -429,20 +428,16 @@ impl QuerySnap {
         self,
         query: T,
         wrapper: fn(Option<T::Response>) -> CompilerQueryResponse,
-    ) -> anyhow::Result<CompilerQueryResponse> {
+    ) -> Result<CompilerQueryResponse> {
         self.run_analysis(|ctx| query.request(ctx)).map(wrapper)
     }
 
-    pub fn run_analysis<T>(self, f: impl FnOnce(&mut LocalContextGuard) -> T) -> anyhow::Result<T> {
+    pub fn run_analysis<T>(self, f: impl FnOnce(&mut LocalContextGuard) -> T) -> Result<T> {
         let world = self.snap.world;
-        let Some(main) = world.main_id() else {
+        let Some(..) = world.main_id() else {
             error!("Project: main file is not set");
             bail!("main file is not set");
         };
-        world.source(main).map_err(|err| {
-            info!("Project: failed to prepare main file: {err:?}");
-            anyhow::anyhow!("failed to get source: {err}")
-        })?;
 
         let mut analysis = self.analysis.snapshot_(world, self.rev_lock);
         Ok(f(&mut analysis))
diff --git a/crates/tinymist/src/server.rs b/crates/tinymist/src/server.rs
index fd016e1a..a29f9898 100644
--- a/crates/tinymist/src/server.rs
+++ b/crates/tinymist/src/server.rs
@@ -6,8 +6,6 @@ use std::path::{Path, PathBuf};
 use std::sync::Arc;
 
 use actor::editor::EditorActor;
-use anyhow::anyhow;
-use anyhow::Context;
 use log::{error, info, trace};
 use lsp_server::RequestId;
 use lsp_types::request::{GotoDeclarationParams, WorkspaceConfiguration};
@@ -304,7 +302,7 @@ impl LanguageState {
 
 impl LanguageState {
     // todo: handle error
-    fn register_capability(&self, registrations: Vec<Registration>) -> anyhow::Result<()> {
+    fn register_capability(&self, registrations: Vec<Registration>) -> Result<()> {
         self.client.send_request_::<RegisterCapability>(
             RegistrationParams { registrations },
             |_, resp| {
@@ -316,7 +314,7 @@ impl LanguageState {
         Ok(())
     }
 
-    fn unregister_capability(&self, unregisterations: Vec<Unregistration>) -> anyhow::Result<()> {
+    fn unregister_capability(&self, unregisterations: Vec<Unregistration>) -> Result<()> {
         self.client.send_request_::<UnregisterCapability>(
             UnregistrationParams { unregisterations },
             |_, resp| {
@@ -329,7 +327,7 @@ impl LanguageState {
     }
 
     /// Registers or unregisters semantic tokens.
-    fn enable_sema_token_caps(&mut self, enable: bool) -> anyhow::Result<()> {
+    fn enable_sema_token_caps(&mut self, enable: bool) -> Result<()> {
         if !self.const_config().tokens_dynamic_registration {
             trace!("skip register semantic by config");
             return Ok(());
@@ -375,7 +373,7 @@ impl LanguageState {
     }
 
     /// Registers or unregisters document formatter.
-    fn enable_formatter_caps(&mut self, enable: bool) -> anyhow::Result<()> {
+    fn enable_formatter_caps(&mut self, enable: bool) -> Result<()> {
         if !self.const_config().doc_fmt_dynamic_registration {
             trace!("skip dynamic register formatter by config");
             return Ok(());
@@ -980,7 +978,7 @@ impl LanguageState {
     }
 
     /// Snapshot the compiler thread for tasks
-    pub fn snapshot(&mut self) -> ZResult<WorldSnapFut> {
+    pub fn snapshot(&mut self) -> Result<WorldSnapFut> {
         self.project.snapshot()
     }
 
@@ -990,7 +988,7 @@ impl LanguageState {
     }
 
     /// Snapshot the compiler thread for language queries
-    pub fn query_snapshot(&mut self) -> ZResult<QuerySnapFut> {
+    pub fn query_snapshot(&mut self) -> Result<QuerySnapFut> {
         self.project.query_snapshot(None)
     }
 
@@ -998,7 +996,7 @@ impl LanguageState {
     pub fn query_snapshot_with_stat(
         &mut self,
         q: &CompilerQueryRequest,
-    ) -> ZResult<QuerySnapWithStat> {
+    ) -> Result<QuerySnapWithStat> {
         let name: &'static str = q.into();
         let path = q.associated_path();
         let stat = self.project.stats.query_stat(path, name);
@@ -1116,7 +1114,7 @@ impl LanguageState {
 
 impl LanguageState {
     /// Restart the primary server.
-    pub fn restart_primary(&mut self) -> ZResult<ProjectInsId> {
+    pub fn restart_primary(&mut self) -> Result<ProjectInsId> {
         let entry = self.entry_resolver().resolve_default();
         let config = &self.config;
 
@@ -1148,7 +1146,7 @@ impl LanguageState {
         &mut self,
         dedicate: &str,
         entry: Option<ImmutPath>,
-    ) -> ZResult<ProjectInsId> {
+    ) -> Result<ProjectInsId> {
         let entry = self.config.compile.entry_resolver.resolve(entry);
         self.project.restart_dedicate(dedicate, entry)
     }
@@ -1367,10 +1365,10 @@ impl LanguageState {
     pub fn query_source<T>(
         &self,
         path: ImmutPath,
-        f: impl FnOnce(Source) -> anyhow::Result<T>,
-    ) -> anyhow::Result<T> {
+        f: impl FnOnce(Source) -> Result<T>,
+    ) -> Result<T> {
         let snapshot = self.memory_changes.get(&path);
-        let snapshot = snapshot.ok_or_else(|| anyhow!("file missing {path:?}"))?;
+        let snapshot = snapshot.ok_or_else(|| anyhow::anyhow!("file missing {path:?}"))?;
         let source = snapshot.content.clone();
         f(source)
     }
diff --git a/crates/tinymist/src/tool/preview.rs b/crates/tinymist/src/tool/preview.rs
index 5ef251ee..6003f9c6 100644
--- a/crates/tinymist/src/tool/preview.rs
+++ b/crates/tinymist/src/tool/preview.rs
@@ -555,7 +555,7 @@ pub async fn make_http_server(
 }
 
 /// Entry point of the preview tool.
-pub async fn preview_main(args: PreviewCliArgs) -> anyhow::Result<()> {
+pub async fn preview_main(args: PreviewCliArgs) -> Result<()> {
     log::info!("Arguments: {args:#?}");
     let handle = tokio::runtime::Handle::current();
 
@@ -615,7 +615,7 @@ pub async fn preview_main(args: PreviewCliArgs) -> anyhow::Result<()> {
         );
         let registered = preview_state.register(&server.primary.id, previewer.compile_watcher());
         if !registered {
-            anyhow::bail!("failed to register preview");
+            tinymist_std::bail!("failed to register preview");
         }
 
         let handle = Arc::new(PreviewProjectHandler {
diff --git a/crates/tinymist/src/tool/project.rs b/crates/tinymist/src/tool/project.rs
index 6f8fb2d9..f43a7280 100644
--- a/crates/tinymist/src/tool/project.rs
+++ b/crates/tinymist/src/tool/project.rs
@@ -3,13 +3,13 @@
 use std::path::Path;
 
 use crate::project::*;
-use prelude::ZResult;
+use prelude::Result;
 
 trait LockFileExt {
     fn declare(&mut self, args: &DocNewArgs) -> Id;
-    fn preview(&mut self, doc_id: Id, args: &TaskPreviewArgs) -> ZResult<Id>;
-    fn compile(&mut self, args: TaskCompileArgs) -> ZResult<Id>;
-    fn export(&mut self, doc_id: Id, args: TaskCompileArgs) -> ZResult<Id>;
+    fn preview(&mut self, doc_id: Id, args: &TaskPreviewArgs) -> Result<Id>;
+    fn compile(&mut self, args: TaskCompileArgs) -> Result<Id>;
+    fn export(&mut self, doc_id: Id, args: TaskCompileArgs) -> Result<Id>;
 }
 
 impl LockFileExt for LockFile {
@@ -56,12 +56,12 @@ impl LockFileExt for LockFile {
         id
     }
 
-    fn compile(&mut self, args: TaskCompileArgs) -> ZResult<Id> {
+    fn compile(&mut self, args: TaskCompileArgs) -> Result<Id> {
         let id = self.declare(&args.declare);
         self.export(id, args)
     }
 
-    fn export(&mut self, doc_id: Id, args: TaskCompileArgs) -> ZResult<Id> {
+    fn export(&mut self, doc_id: Id, args: TaskCompileArgs) -> Result<Id> {
         let task = args.to_task(doc_id)?;
         let task_id = task.id().clone();
 
@@ -70,7 +70,7 @@ impl LockFileExt for LockFile {
         Ok(task_id)
     }
 
-    fn preview(&mut self, doc_id: Id, args: &TaskPreviewArgs) -> ZResult<Id> {
+    fn preview(&mut self, doc_id: Id, args: &TaskPreviewArgs) -> Result<Id> {
         let task_id = args
             .name
             .as_ref()
@@ -91,7 +91,7 @@ impl LockFileExt for LockFile {
 }
 
 /// Project document commands' main
-pub fn project_main(args: DocCommands) -> anyhow::Result<()> {
+pub fn project_main(args: DocCommands) -> Result<()> {
     LockFile::update(Path::new("."), |state| {
         match args {
             DocCommands::New(args) => {
@@ -112,7 +112,7 @@ pub fn project_main(args: DocCommands) -> anyhow::Result<()> {
 }
 
 /// Project task commands' main
-pub fn task_main(args: TaskCommands) -> anyhow::Result<()> {
+pub fn task_main(args: TaskCommands) -> Result<()> {
     LockFile::update(Path::new("."), |state| {
         match args {
             TaskCommands::Compile(args) => {