51 lines
1.2 KiB
TypeScript
51 lines
1.2 KiB
TypeScript
const path = require('path');
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const fs = require('fs');
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const mainExport = bundler => {
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const readAsset = pathArg => {
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try {
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return fs.readFileSync(pathArg, 'utf8');
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} catch (e) {
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console.error('file is invalid');
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throw e;
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}
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};
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const writeAsset = (name, { header = '', footer = '' }) => {
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fs.writeFileSync(
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name,
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`${header}
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${readAsset(name)}
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${footer}`
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);
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};
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const processAsset = async (bundle, processFn) => {
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const { name } = bundle;
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const wrappingCode = await processFn({ name, bundler });
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if (wrappingCode) {
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writeAsset(name, wrappingCode);
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}
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bundle.childBundles.forEach(function(bundle) {
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processAsset(bundle, processFn);
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});
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};
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bundler.on('bundled', async bundle => {
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try {
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const CWD = process.cwd();
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const processFn = require(path.join(CWD, '.assetWrapper.js'));
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if (processFn && typeof processFn === 'function') {
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await processAsset(bundle, processFn);
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}
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} catch (error) {
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console.warn(
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'parcel-plugin-wrapper cannot work without a .assetWrapper.js in the root of your project!'
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);
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}
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});
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};
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export default mainExport; |