Mirror: 🎩 A tiny but capable push & pull stream library for TypeScript and Flow
Add minification to fold and squash implicit returns away
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-1
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-1
scripts/minify-bucklescript-plugin.js
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scripts/minify-bucklescript-plugin.js
···
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};
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}
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function squashImplicitUnitReturn({ types: t }) {
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return {
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visitor: {
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ReturnStatement(path) {
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if (
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t.isCallExpression(path.node.argument) &&
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t.isIdentifier(path.node.argument.callee) &&
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(path.node.argument.callee.name === 'sink' || path.node.argument.callee.name === 'source')
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) {
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path.replaceWithMultiple([
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t.expressionStatement(path.node.argument),
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t.returnStatement(),
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]);
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}
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},
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Function: {
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exit(functionPath) {
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if (t.isIdentifier(functionPath.id) && functionPath.id.name === 'valFromOption') return;
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let hasEmptyReturn = false;
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let hasCallReturnOnly = true;
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functionPath.traverse({
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Function(innerPath) {
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innerPath.skip();
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},
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ReturnStatement: {
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enter(path) {
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if (path.node.argument === null) {
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hasEmptyReturn = true;
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} else if (!t.isCallExpression(path.node.argument)) {
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hasCallReturnOnly = false;
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}
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},
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exit(path) {
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if (hasEmptyReturn && hasCallReturnOnly && path.node.argument !== null) {
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path.replaceWithMultiple([
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t.expressionStatement(path.node.argument),
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t.returnStatement(),
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]);
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}
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},
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},
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});
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},
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},
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},
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};
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}
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function cleanup(opts = {}) {
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const filter = createFilter(opts.include, opts.exclude, {
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resolve: false,
···
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}
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return transform(code, {
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plugins: [unwrapStatePlugin, curryGuaranteePlugin],
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plugins: [unwrapStatePlugin, curryGuaranteePlugin, squashImplicitUnitReturn],
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babelrc: false,
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});
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},