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[v14.x backport] module: improve support of data: URLs #39669

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[v14.x backport] module: improve support of data: URLs #39669

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5 changes: 3 additions & 2 deletions lib/internal/modules/esm/get_source.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

const {
RegExpPrototypeExec,
decodeURIComponent,
} = primordials;
const { getOptionValue } = require('internal/options');
// Do not eagerly grab .manifest, it may be in TDZ
Expand Down Expand Up @@ -31,8 +32,8 @@ async function defaultGetSource(url, { format } = {}, defaultGetSource) {
if (!match) {
throw new ERR_INVALID_URL(url);
}
const [ , base64, body ] = match;
source = Buffer.from(body, base64 ? 'base64' : 'utf8');
const { 1: base64, 2: body } = match;
source = Buffer.from(decodeURIComponent(body), base64 ? 'base64' : 'utf8');
} else {
throw new ERR_INVALID_URL_SCHEME(['file', 'data']);
}
Expand Down
5 changes: 5 additions & 0 deletions test/es-module/test-esm-data-urls.js
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Expand Up @@ -102,4 +102,9 @@ function createBase64URL(mime, body) {
assert.strictEqual(e.code, 'ERR_INVALID_MODULE_SPECIFIER');
}
}
{
const plainESMURL = 'data:text/javascript,export%20default%202';
const module = await import(plainESMURL);
assert.strictEqual(module.default, 2);
}
})().then(common.mustCall());