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Bundles can be sync or async based on top level await (#4124)

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Previously, bundles always utilised top level await, even if the bundled
modules didn't require top level await.  Now, analysis of the bundle is
done and if none of the bundled modules are asynchronously executed,
then the bundle as a whole will be synchronously executed.

Fixes #4055
Fixes #4123
This commit is contained in:
Kitson Kelly 2020-02-27 03:59:33 +11:00 • committed by GitHub
parent 942e67c00b
commit 671f0b83be
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4 changed files with 58 additions and 36 deletions
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4
cli/js/compiler_api_test.ts
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@ -94,14 +94,14 @@ test(async function bundleApiSources() {
"/bar.ts": `export const bar = "bar";\n`
});
assert(diagnostics == null);
assert(actual.includes(`__inst("foo")`));
assert(actual.includes(`__inst_s("foo")`));
assert(actual.includes(`__exp["bar"]`));
});
test(async function bundleApiNoSources() {
const [diagnostics, actual] = await bundle("./cli/tests/subdir/mod1.ts");
assert(diagnostics == null);
assert(actual.includes(`__inst("mod1")`));
assert(actual.includes(`__inst_s("mod1")`));
assert(actual.includes(`__exp["printHello3"]`));
});