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enable prefer const (#5113)

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This commit is contained in:
Henry Zhu
2017-01-14 09:48:52 -05:00
committed by GitHub
parent 982850731e
commit 672adba9a1
177 changed files with 1862 additions and 1863 deletions
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54
packages/babel-plugin-transform-object-rest-spread/src/index.js
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@@ -11,7 +11,7 @@ export default function ({ types: t }) {
}
function hasSpread(node) {
for (let prop of (node.properties)) {
for (const prop of (node.properties)) {
if (t.isSpreadProperty(prop)) {
return true;
}
@@ -22,8 +22,8 @@ export default function ({ types: t }) {
function createObjectSpread(file, props, objRef) {
const restProperty = props.pop();
let keys = [];
for (let prop of props) {
const keys = [];
for (const prop of props) {
let key = prop.key;
if (t.isIdentifier(key) && !prop.computed) {
key = t.stringLiteral(prop.key.name);
@@ -44,10 +44,10 @@ export default function ({ types: t }) {
function replaceRestProperty(paramsPath, i, numParams) {
if (paramsPath.isObjectPattern() && hasRestProperty(paramsPath)) {
let parentPath = paramsPath.parentPath;
let uid = parentPath.scope.generateUidIdentifier("ref");
const parentPath = paramsPath.parentPath;
const uid = parentPath.scope.generateUidIdentifier("ref");
let declar = t.variableDeclaration("let", [
const declar = t.variableDeclaration("let", [
t.variableDeclarator(paramsPath.node, uid)
]);
declar._blockHoist = i ? numParams - i : 1;
@@ -65,7 +65,7 @@ export default function ({ types: t }) {
// taken from transform-es2015-parameters/src/destructuring.js
// function a({ b, ...c }) {}
Function(path) {
let params = path.get("params");
const params = path.get("params");
for (let i = 0; i < params.length; i++) {
replaceRestProperty(params[i], i, params.length);
}
@@ -75,7 +75,7 @@ export default function ({ types: t }) {
VariableDeclarator(path, file) {
if (!path.get("id").isObjectPattern()) { return; }
const kind = path.parentPath.node.kind;
let nodes = [];
const nodes = [];
path.traverse({
RestProperty(path) {
@@ -89,7 +89,7 @@ export default function ({ types: t }) {
}
});
let [ argument, callExpression ] = createObjectSpread(
const [ argument, callExpression ] = createObjectSpread(
file,
path.parentPath.node.properties,
ref
@@ -108,7 +108,7 @@ export default function ({ types: t }) {
).remove();
}
}
},{
}, {
originalPath: path
});
@@ -122,14 +122,14 @@ export default function ({ types: t }) {
// taken from transform-es2015-destructuring/src/index.js#visitor
// export var { a, ...b } = c;
ExportNamedDeclaration(path) {
let declaration = path.get("declaration");
const declaration = path.get("declaration");
if (!declaration.isVariableDeclaration()) return;
if (!hasRestProperty(declaration)) return;
let specifiers = [];
const specifiers = [];
for (let name in path.getOuterBindingIdentifiers(path)) {
let id = t.identifier(name);
for (const name in path.getOuterBindingIdentifiers(path)) {
const id = t.identifier(name);
specifiers.push(t.exportSpecifier(id, id));
}
@@ -145,9 +145,9 @@ export default function ({ types: t }) {
},
// ({a, ...b} = c);
AssignmentExpression(path, file) {
let leftPath = path.get("left");
const leftPath = path.get("left");
if (leftPath.isObjectPattern() && hasRestProperty(leftPath)) {
let nodes = [];
const nodes = [];
let ref;
if (path.isCompletionRecord() || path.parentPath.isExpressionStatement()) {
@@ -158,13 +158,13 @@ export default function ({ types: t }) {
]));
}
let [ argument, callExpression ] = createObjectSpread(
const [ argument, callExpression ] = createObjectSpread(
file,
path.node.left.properties,
ref
);
let nodeWithoutSpread = t.clone(path.node);
const nodeWithoutSpread = t.clone(path.node);
nodeWithoutSpread.right = ref;
nodes.push(t.expressionStatement(nodeWithoutSpread));
nodes.push(t.toStatement(t.assignmentExpression(
@@ -182,13 +182,13 @@ export default function ({ types: t }) {
},
// taken from transform-es2015-destructuring/src/index.js#visitor
ForXStatement(path) {
let { node, scope } = path;
let leftPath = path.get("left");
let left = node.left;
const { node, scope } = path;
const leftPath = path.get("left");
const left = node.left;
// for ({a, ...b} of []) {}
if (t.isObjectPattern(left) && hasRestProperty(leftPath)) {
let temp = scope.generateUidIdentifier("ref");
const temp = scope.generateUidIdentifier("ref");
node.left = t.variableDeclaration("var", [
t.variableDeclarator(temp)
@@ -205,10 +205,10 @@ export default function ({ types: t }) {
if (!t.isVariableDeclaration(left)) return;
let pattern = left.declarations[0].id;
const pattern = left.declarations[0].id;
if (!t.isObjectPattern(pattern)) return;
let key = scope.generateUidIdentifier("ref");
const key = scope.generateUidIdentifier("ref");
node.left = t.variableDeclaration(left.kind, [
t.variableDeclarator(key, null)
]);
@@ -225,12 +225,12 @@ export default function ({ types: t }) {
ObjectExpression(path, file) {
if (!hasSpread(path.node)) return;
let useBuiltIns = file.opts.useBuiltIns || false;
const useBuiltIns = file.opts.useBuiltIns || false;
if (typeof useBuiltIns !== "boolean") {
throw new Error("transform-object-rest-spread currently only accepts a boolean option for useBuiltIns (defaults to false)");
}
let args = [];
const args = [];
let props = [];
function push() {
@@ -239,7 +239,7 @@ export default function ({ types: t }) {
props = [];
}
for (let prop of (path.node.properties: Array)) {
for (const prop of (path.node.properties: Array)) {
if (t.isSpreadProperty(prop)) {
push();
args.push(prop.argument);