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Migrate Babel from Flow to TypeScript (except Babel parser) (#11578)

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Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>
This commit is contained in:
Bogdan Savluk
2021-11-25 23:09:13 +01:00
committed by GitHub
parent 473f145b27
commit 0058b7fef4
162 changed files with 672 additions and 133 deletions
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26
packages/babel-plugin-transform-destructuring/src/index.js → packages/babel-plugin-transform-destructuring/src/index.ts
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@@ -1,5 +1,6 @@
import { declare } from "@babel/helper-plugin-utils";
import { types as t } from "@babel/core";
import type { Scope } from "@babel/traverse";
export default declare((api, options) => {
api.assertVersion(7);
@@ -23,7 +24,7 @@ export default declare((api, options) => {
*/
function variableDeclarationHasPattern(node) {
for (const declar of (node.declarations: Array)) {
for (const declar of node.declarations) {
if (t.isPattern(declar.id)) {
return true;
}
@@ -36,7 +37,7 @@ export default declare((api, options) => {
*/
function hasRest(pattern) {
for (const elem of (pattern.elements: Array)) {
for (const elem of pattern.elements) {
if (t.isRestElement(elem)) {
return true;
}
@@ -49,7 +50,7 @@ export default declare((api, options) => {
*/
function hasObjectRest(pattern) {
for (const elem of (pattern.properties: Array)) {
for (const elem of pattern.properties) {
if (t.isRestElement(elem)) {
return true;
}
@@ -77,6 +78,15 @@ export default declare((api, options) => {
};
class DestructuringTransformer {
private blockHoist: any;
private operator: any;
arrays: any;
private nodes: any;
private scope: Scope;
private kind: any;
private iterableIsArray: any;
private arrayLikeIsIterable: any;
private addHelper: any;
constructor(opts) {
this.blockHoist = opts.blockHoist;
this.operator = opts.operator;
@@ -118,6 +128,7 @@ export default declare((api, options) => {
const declar = t.variableDeclaration("var", [
t.variableDeclarator(t.cloneNode(id), t.cloneNode(init)),
]);
// @ts-expect-error todo(flow->ts): avoid mutations
declar._blockHoist = this.blockHoist;
return declar;
}
@@ -135,7 +146,7 @@ export default declare((api, options) => {
}
}
toArray(node, count) {
toArray(node, count?) {
if (
this.iterableIsArray ||
(t.isIdentifier(node) && this.arrays[node.name])
@@ -208,6 +219,7 @@ export default declare((api, options) => {
keys.push(t.cloneNode(key));
hasTemplateLiteral = true;
} else if (t.isLiteral(key)) {
// @ts-expect-error todo(flow->ts) NullLiteral
keys.push(t.stringLiteral(String(key.value)));
} else {
keys.push(t.cloneNode(key));
@@ -222,7 +234,7 @@ export default declare((api, options) => {
t.cloneNode(objRef),
]);
} else {
let keyExpression = t.arrayExpression(keys);
let keyExpression: t.Expression = t.arrayExpression(keys);
if (!allLiteral) {
keyExpression = t.callExpression(
@@ -342,7 +354,7 @@ export default declare((api, options) => {
return false;
}
for (const elem of (pattern.elements: Array)) {
for (const elem of pattern.elements) {
// deopt on holes
if (!elem) return false;
@@ -350,7 +362,7 @@ export default declare((api, options) => {
if (t.isMemberExpression(elem)) return false;
}
for (const elem of (arr.elements: Array)) {
for (const elem of arr.elements) {
// deopt on spread elements
if (t.isSpreadElement(elem)) return false;