58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
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import babel from '@babel/core';
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const babelOptions = {
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babelrc: false,
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ignore: [/\/(build|node_modules)\//],
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plugins: ['@babel/plugin-syntax-import-meta', '@babel/plugin-transform-react-jsx']
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};
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export async function load(url, context, defaultLoad) {
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const {
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format
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} = context;
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const result = await defaultLoad(url, context, defaultLoad);
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if (result.format === 'module') {
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const opt = {
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filename: url
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} |> Object.assign(%, babelOptions);
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const newResult = await (result.source |> babel.transformAsync(%, opt));
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if (!newResult) {
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if (typeof result.source === 'string') {
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return result;
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}
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return {
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source: 'utf8' |> (result.source |> Buffer.from(%)).toString(%),
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format: 'module'
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};
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}
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return {
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source: newResult.code,
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format: 'module'
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};
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}
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return defaultLoad(url, context, defaultLoad);
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}
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async function babelTransformSource(source, context, defaultTransformSource) {
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const {
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format
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} = context;
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if (format === 'module') {
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const opt = {
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filename: context.url
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} |> Object.assign(%, babelOptions);
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const newResult = await (source |> babel.transformAsync(%, opt));
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if (!newResult) {
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if (typeof source === 'string') {
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return {
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source
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};
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}
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return {
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source: 'utf8' |> (source |> Buffer.from(%)).toString(%)
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};
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}
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return {
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source: newResult.code
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};
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}
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return defaultTransformSource(source, context, defaultTransformSource);
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}
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export const transformSource = process.version < 'v16' ? babelTransformSource : undefined;
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