cerxes/babel
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fix: plugin-transform-object-rest-spread param with default value

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This commit is contained in:
Christophe Hurpeau
2017-01-10 22:31:43 +01:00
committed by Logan Smyth
parent 1ab58d6dae
commit 4a1965511f
3 changed files with 17 additions and 7 deletions
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19
packages/babel-plugin-transform-object-rest-spread/src/index.js
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@@ -42,19 +42,23 @@ export default function ({ types: t }) {
];
}
function replaceRestProperty(paramsPath, i, numParams) {
if (paramsPath.isObjectPattern() && hasRestProperty(paramsPath)) {
const parentPath = paramsPath.parentPath;
function replaceRestProperty(parentPath, paramPath, i, numParams) {
if (paramPath.isAssignmentPattern()) {
replaceRestProperty(parentPath, paramPath.get("left"), i, numParams);
return;
}
if (paramPath.isObjectPattern() && hasRestProperty(paramPath)) {
const uid = parentPath.scope.generateUidIdentifier("ref");
const declar = t.variableDeclaration("let", [
t.variableDeclarator(paramsPath.node, uid)
t.variableDeclarator(paramPath.node, uid)
]);
declar._blockHoist = i ? numParams - i : 1;
parentPath.ensureBlock();
parentPath.get("body").unshiftContainer("body", declar);
paramsPath.replaceWith(uid);
paramPath.replaceWith(uid);
}
}
@@ -67,7 +71,7 @@ export default function ({ types: t }) {
Function(path) {
const params = path.get("params");
for (let i = 0; i < params.length; i++) {
replaceRestProperty(params[i], i, params.length);
replaceRestProperty(params[i].parentPath, params[i], i, params.length);
}
},
// adapted from transform-es2015-destructuring/src/index.js#pushObjectRest
@@ -141,7 +145,8 @@ export default function ({ types: t }) {
},
// try {} catch ({a, ...b}) {}
CatchClause(path) {
replaceRestProperty(path.get("param"));
const paramPath = path.get("param");
replaceRestProperty(paramPath.parentPath, paramPath);
},
// ({a, ...b} = c);
AssignmentExpression(path, file) {