cerxes/babel
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add polyfill and regenerator options to babel-plugin-transform-runtime

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This commit is contained in:
Sebastian McKenzie
2015-11-09 02:50:39 -08:00
parent 0df276272a
commit bd39ea2611
1 changed files with 9 additions and 4 deletions
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13
packages/babel-plugin-transform-runtime/src/index.js
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@@ -24,6 +24,8 @@ export default function ({ types: t }) {
visitor: {
ReferencedIdentifier(path, state) {
if (state.opts.regenerator === false) return;
let { node, parent, scope } = path;
if (node.name === "regeneratorRuntime") {
@@ -43,8 +45,9 @@ export default function ({ types: t }) {
));
},
// arr[Symbol.iterator]() -> _core.$for.getIterator(arr)
CallExpression(path, state) {
// arr[Symbol.iterator]() -> _core.$for.getIterator(arr)
if (state.opts.polyfill === false) return;
// we can't compile this
if (path.node.arguments.length) return;
@@ -64,8 +67,9 @@ export default function ({ types: t }) {
));
},
// Symbol.iterator in arr -> core.$for.isIterable(arr)
BinaryExpression(path, state) {
// Symbol.iterator in arr -> core.$for.isIterable(arr)
if (state.opts.polyfill === false) return;
if (path.node.operator !== "in") return;
if (!path.get("left").matchesPattern("Symbol.iterator")) return;
@@ -80,12 +84,12 @@ export default function ({ types: t }) {
));
},
// Array.from -> _core.Array.from
MemberExpression: {
enter(path, state) {
if (state.opts.polyfill === false) return;
if (!path.isReferenced()) return;
// Array.from -> _core.Array.from
let { node } = path;
let obj = node.object;
let prop = node.property;
@@ -114,6 +118,7 @@ export default function ({ types: t }) {
},
exit(path, state) {
if (state.opts.polyfill === false) return;
if (!path.isReferenced()) return;
let { node } = path;