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[api-minor] Attempt to improve support for using the PDF.js builds with Vite

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Similar to Webpack there's apparently other bundlers that will not leave `import`-calls alone unless magic comments are used.
Hence we extend the builder to also append `/* @vite-ignore */` comments to `import`-calls, in order to attempt to improve support for using the PDF.js builds together with Vite.

This patch also renames `__non_webpack_import__` to `__raw_import__` since the functionality is no longer bundler-specific.

***PLEASE NOTE:*** This patch is provided as-is, and it does *not* mean that the PDF.js project can/will provide official support for Vite.
This commit is contained in:
Jonas Jenwald 2025-03-27 21:31:27 +01:00
parent 34136d7775
commit 8bcc3664c9
8 changed files with 19 additions and 12 deletions
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12
external/builder/babel-plugin-pdfjs-preprocessor.mjs vendored
View file

@ -153,18 +153,22 @@ function babelPluginPDFJSPreprocessor(babel, ctx) {
path.replaceWith(t.inherits(t.valueToNode(result), path.node));
}
if (t.isIdentifier(node.callee, { name: "__non_webpack_import__" })) {
if (t.isIdentifier(node.callee, { name: "__raw_import__" })) {
if (node.arguments.length !== 1) {
throw new Error("Invalid `__non_webpack_import__` usage.");
throw new Error("Invalid `__raw_import__` usage.");
}
// Replace it with a standard `import`-call and
// ensure that Webpack will leave it alone.
// Replace it with a standard `import`-call and attempt to ensure that
// various bundlers will leave it alone; this *must* include Webpack.
const source = node.arguments[0];
source.leadingComments = [
{
type: "CommentBlock",
value: "webpackIgnore: true",
},
{
type: "CommentBlock",
value: "@vite-ignore",
},
];
path.replaceWith(t.importExpression(source));
}

5
external/builder/fixtures_babel/importalias-expected.js vendored
View file

@ -1,4 +1,7 @@
import { Test } from "import-name";
import { Test2 } from './non-alias';
export { Test3 } from "import-name";
await import(/*webpackIgnore: true*/"./non-alias");
await import(
/*webpackIgnore: true*/
/*@vite-ignore*/
"./non-alias");

2
external/builder/fixtures_babel/importalias.js vendored
View file

@ -1,4 +1,4 @@
import { Test } from 'import-alias';
import { Test2 } from './non-alias';
export { Test3 } from 'import-alias';
await __non_webpack_import__("./non-alias");
await __raw_import__("./non-alias");