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better commonjs support #1007

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merged 1 commit into from
Dec 12, 2024
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better commonjs support #1007

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20 changes: 18 additions & 2 deletions packages/repl/src/lib/workers/bundler/plugins/commonjs.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -20,16 +20,31 @@ const plugin: Plugin = {
});

const requires: string[] = [];
const exports: string[] = [];

walk(ast as Node, null, {
CallExpression: (node) => {
CallExpression: (node, context) => {
if (node.callee.type === 'Identifier' && node.callee.name === 'require') {
if (node.arguments.length !== 1) return;
const arg = node.arguments[0];
if (arg.type !== 'Literal' || typeof arg.value !== 'string') return;

requires.push(arg.value);
}

context.next();
},
AssignmentExpression: (node, context) => {
if (node.operator !== '=') return;
if (node.left.type !== 'MemberExpression') return;
if (node.left.object.type !== 'Identifier' || node.left.object.name !== 'exports') return;
if (node.left.computed || node.left.property.type !== 'Identifier') return;

exports.push(
`export const ${node.left.property.name} = module.exports.${node.left.property.name};`
);

context.next();
}
});

Expand All @@ -44,7 +59,8 @@ const plugin: Plugin = {
require,
`const exports = {}; const module = { exports };`,
code,
`export default module.exports;`
`export default module.exports;`,
exports.join('\n')
].join('\n\n');

return {
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