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fix: support TS resolution in JS files when allowJs is set #535

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merged 4 commits into from
Apr 25, 2024
Merged

fix: support TS resolution in JS files when allowJs is set #535

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1632a30
Support TS resolution in JS files when allowJs is set
nwalters512 Apr 23, 2024
86e33ea
Fix test and CJS behavior
nwalters512 Apr 24, 2024
c80ef6c
Merge branch 'develop' into support-allowjs
privatenumber Apr 24, 2024
f4484fc
Merge branch 'develop' into support-allowjs
privatenumber Apr 25, 2024
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5 changes: 4 additions & 1 deletion src/cjs/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -205,7 +205,10 @@ const resolveTsFilename = (

if (
parent?.filename
&& isTsFilePatten.test(parent.filename)
&& (
isTsFilePatten.test(parent.filename)
|| tsconfig?.config.compilerOptions?.allowJs
)
&& tsPath
) {
for (const tryTsPath of tsPath) {
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13 changes: 6 additions & 7 deletions src/esm/loaders.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
isJsonPattern,
getFormatFromFileUrl,
fileProtocol,
allowJs,
type MaybePromise,
type NodeError,
} from './utils.js';
Expand Down Expand Up @@ -133,7 +134,7 @@

const isRelativePathPattern = /^\.{1,2}\//;

export const resolve: resolve = async (

Check warning on line 137 in src/esm/loaders.ts

View workflow job for this annotation

GitHub Actions / Test (ubuntu-latest) 

Async arrow function has a complexity of 23. Maximum allowed is 10
specifier,
context,
defaultResolve,
Expand Down Expand Up @@ -166,13 +167,11 @@
}
}

/**
* Typescript gives .ts, .cts, or .mts priority over actual .js, .cjs, or .mjs extensions
*/
if (
// !recursiveCall &&
tsExtensionsPattern.test(context.parentURL!)
) {
// Typescript gives .ts, .cts, or .mts priority over actual .js, .cjs, or .mjs extensions
//
// If `allowJs` is set in `tsconfig.json`, then we'll apply the same resolution logic
// to files without a TypeScript extension.
if (tsExtensionsPattern.test(context.parentURL!) || allowJs) {
const tsPaths = resolveTsPath(specifier);
if (tsPaths) {
for (const tsPath of tsPaths) {
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1 change: 1 addition & 0 deletions src/esm/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ const tsconfig = (

export const fileMatcher = tsconfig && createFilesMatcher(tsconfig);
export const tsconfigPathsMatcher = tsconfig && createPathsMatcher(tsconfig);
export const allowJs = tsconfig?.config.compilerOptions?.allowJs ?? false;

export const fileProtocol = 'file://';

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19 changes: 19 additions & 0 deletions tests/specs/smoke.ts
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@nwalters512 nwalters512 Apr 24, 2024 •
edited
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I didn't fully understand how the tests are structured/split up; I'd be more than happy to adjust things here in response to feedback.

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@privatenumber privatenumber Apr 24, 2024 •
edited
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For context, the idea behind the smoke tests here is to test with minimal number of child processes; the other tests are slow primarily because it spawns so many children.

Original file line number Diff line number Diff line change
Expand Up @@ -218,6 +218,14 @@ const files = {

'file.txt': 'hello',

'import-typescript-parent.js': sourcemap.tag`
import './import-typescript-child.js';
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Can you move this inside import-from-js.js?

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@nwalters512 nwalters512 Apr 24, 2024 •
edited
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I can, though that will require adding --tsconfig tsconfig/tsconfig-allowJs.json to that test's arguments, at which point I think there wouldn't be any tests that cover the case where TS resolution rules aren't followed. If that's good with you, I'll do the move and delete the allowJs in tsconfig.json test.

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Ah good point, let's keep it this way then. Thanks for catching it!

`,

'import-typescript-child.ts': sourcemap.tag`
console.log('imported');
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Make this allowJs or something more unique that can be matched from within the 'from .js' test

`,

node_modules: {
'pkg-commonjs': {
'package.json': JSON.stringify({
Expand Down Expand Up @@ -663,6 +671,17 @@ export default testSuite(async ({ describe }, { tsx }: NodeApis) => {
expect(pTsconfigAllowJs.stderr).toMatch('Error: No error thrown');
expect(pTsconfigAllowJs.stdout).toBe('');
});

test('allowJs in tsconfig.json', async ({ onTestFail }) => {
const pTsconfigAllowJs = await tsx(['--tsconfig', 'tsconfig/tsconfig-allowJs.json', 'import-typescript-parent.js'], fixture.path);
onTestFail((error) => {
console.error(error);
console.log(pTsconfigAllowJs);
});
expect(pTsconfigAllowJs.failed).toBe(false);
expect(pTsconfigAllowJs.stderr).toBe('');
expect(pTsconfigAllowJs.stdout).toBe('imported');
});
});
});
}
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