26 lines
964 B
JavaScript
26 lines
964 B
JavaScript
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import { readFile } from "node:fs/promises";
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import { fileURLToPath } from "node:url";
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import esbuild from "esbuild";
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// `@babel/code-frame` and `@babel/highlight` use syntax that is not available in Node.js 14,
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// such as `??=`. When bundled into dist/ they are compiled to be compatible with Node.js 14,
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// however we also need to load them at runtime from node_modules to run our tests.
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// We can use an `--experimental-loader` to compile them on-the-fly with esbuild.
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export async function getSource(url, context, defaultGetSource) {
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if (
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!/node_modules\/@babel\/(?:code-frame|highlight)/u.test(url) ||
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context.format !== "module"
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) {
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return defaultGetSource(url, context, defaultGetSource);
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}
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const raw = await readFile(fileURLToPath(url));
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try {
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const result = await esbuild.transform(raw, { target: "node14" });
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return { source: result.code };
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} catch (error) {
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error.message += ` (in ${url})`;
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throw error;
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}
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}
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