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This commit is contained in:
Brian Ng
2017-06-27 12:15:00 -05:00
parent 93cc22dae1
commit e4b35f680d
307 changed files with 6742 additions and 4080 deletions
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78
packages/babel-plugin-transform-es2015-destructuring/src/index.js
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@@ -1,5 +1,4 @@
export default function ({ types: t }) {
export default function({ types: t }) {
/**
* Test if a VariableDeclaration's declarations contains any Patterns.
*/
@@ -86,7 +85,10 @@ export default function ({ types: t }) {
}
toArray(node, count) {
if (this.file.opts.loose || (t.isIdentifier(node) && this.arrays[node.name])) {
if (
this.file.opts.loose ||
(t.isIdentifier(node) && this.arrays[node.name])
) {
return node;
} else {
return this.scope.toArray(node, count);
@@ -97,7 +99,9 @@ export default function ({ types: t }) {
// we need to assign the current value of the assignment to avoid evaluating
// it more than once
const tempValueRef = this.scope.generateUidIdentifierBasedOnNode(valueRef);
const tempValueRef = this.scope.generateUidIdentifierBasedOnNode(
valueRef,
);
const declar = t.variableDeclaration("var", [
t.variableDeclarator(tempValueRef, valueRef),
@@ -110,13 +114,13 @@ export default function ({ types: t }) {
const tempConditional = t.conditionalExpression(
t.binaryExpression("===", tempValueRef, t.identifier("undefined")),
pattern.right,
tempValueRef
tempValueRef,
);
const left = pattern.left;
if (t.isPattern(left)) {
const tempValueDefault = t.expressionStatement(
t.assignmentExpression("=", tempValueRef, tempConditional)
t.assignmentExpression("=", tempValueRef, tempConditional),
);
tempValueDefault._blockHoist = this.blockHoist;
@@ -143,7 +147,9 @@ export default function ({ types: t }) {
if (t.isRestElement(prop)) continue;
let key = prop.key;
if (t.isIdentifier(key) && !prop.computed) key = t.stringLiteral(prop.key.name);
if (t.isIdentifier(key) && !prop.computed) {
key = t.stringLiteral(prop.key.name);
}
keys.push(key);
}
@@ -152,7 +158,9 @@ export default function ({ types: t }) {
//
const value = t.callExpression(
this.file.addHelper("objectWithoutProperties"), [objRef, keys]);
this.file.addHelper("objectWithoutProperties"),
[objRef, keys],
);
this.nodes.push(this.buildVariableAssignment(spreadProp.argument, value));
}
@@ -173,9 +181,13 @@ export default function ({ types: t }) {
// https://github.com/babel/babel/issues/681
if (!pattern.properties.length) {
this.nodes.push(t.expressionStatement(
t.callExpression(this.file.addHelper("objectDestructuringEmpty"), [objRef])
));
this.nodes.push(
t.expressionStatement(
t.callExpression(this.file.addHelper("objectDestructuringEmpty"), [
objRef,
]),
),
);
}
// if we have more than one properties in this pattern and the objectRef is a
@@ -207,7 +219,9 @@ export default function ({ types: t }) {
// pattern has less elements than the array and doesn't have a rest so some
// elements wont be evaluated
if (pattern.elements.length > arr.elements.length) return;
if (pattern.elements.length < arr.elements.length && !hasRest(pattern)) return false;
if (pattern.elements.length < arr.elements.length && !hasRest(pattern)) {
return false;
}
for (const elem of (pattern.elements: Array)) {
// deopt on holes
@@ -293,8 +307,10 @@ export default function ({ types: t }) {
if (t.isRestElement(elem)) {
elemRef = this.toArray(arrayRef);
elemRef = t.callExpression(t.memberExpression(elemRef, t.identifier("slice")),
[t.numericLiteral(i)]);
elemRef = t.callExpression(
t.memberExpression(elemRef, t.identifier("slice")),
[t.numericLiteral(i)],
);
// set the element to the rest element argument since we've dealt with it
// being a rest already
@@ -327,7 +343,6 @@ export default function ({ types: t }) {
}
}
return {
visitor: {
ExportNamedDeclaration(path) {
@@ -364,9 +379,9 @@ export default function ({ types: t }) {
path.ensureBlock();
node.body.body.unshift(t.variableDeclaration("var", [
t.variableDeclarator(left, temp),
]));
node.body.body.unshift(
t.variableDeclaration("var", [t.variableDeclarator(left, temp)]),
);
return;
}
@@ -432,12 +447,17 @@ export default function ({ types: t }) {
});
let ref;
if (path.isCompletionRecord() || !path.parentPath.isExpressionStatement()) {
if (
path.isCompletionRecord() ||
!path.parentPath.isExpressionStatement()
) {
ref = scope.generateUidIdentifierBasedOnNode(node.right, "ref");
nodes.push(t.variableDeclaration("var", [
t.variableDeclarator(ref, node.right),
]));
nodes.push(
t.variableDeclaration("var", [
t.variableDeclarator(ref, node.right),
]),
);
if (t.isArrayExpression(node.right)) {
destructuring.arrays[ref.name] = true;
@@ -486,15 +506,23 @@ export default function ({ types: t }) {
t.inherits(nodes[nodes.length - 1], declar);
}
} else {
nodes.push(t.inherits(
destructuring.buildVariableAssignment(declar.id, declar.init), declar));
nodes.push(
t.inherits(
destructuring.buildVariableAssignment(declar.id, declar.init),
declar,
),
);
}
}
const nodesOut = [];
for (const node of nodes) {
const tail = nodesOut[nodesOut.length - 1];
if (tail && t.isVariableDeclaration(tail) && t.isVariableDeclaration(node)) {
if (
tail &&
t.isVariableDeclaration(tail) &&
t.isVariableDeclaration(node)
) {
// Create a single compound declarations
tail.declarations.push(...node.declarations);
} else {