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add some packages

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s2
2018-05-05 13:54:07 +02:00
parent 48c1138518
commit ff6e20677d
3738 changed files with 215920 additions and 0 deletions

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# babel-plugin-transform-merge-sibling-variables
Merge sibling variables into one.
## Example
**In**
```javascript
// merge into a single VariableDeclaration
var foo = "bar";
var bar = "foo";
foobar();
// merge into the next for loop
var i = 0;
for (var x = 0; x < 10; x++) {}
```
**Out**
```javascript
var foo = "bar",
bar = "foo";
foobar();
for (var i = 0, x = 0; x < 10; x++) {}
```
## Installation
```sh
npm install babel-plugin-transform-merge-sibling-variables
```
## Usage
### Via `.babelrc` (Recommended)
**.babelrc**
```json
{
"plugins": ["transform-merge-sibling-variables"]
}
```
### Via CLI
```sh
babel --plugins transform-merge-sibling-variables script.js
```
### Via Node API
```javascript
require("@babel/core").transform("code", {
plugins: ["transform-merge-sibling-variables"]
});
```

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"use strict";
module.exports = function ({
types: t
}) {
function liftDeclaration(path, body, kind) {
if (body[0] && body[0].isVariableDeclaration({
kind: kind
})) {
if (body[0].node.declarations.length > 1) {
return;
}
if (body[1] && body[1].isVariableDeclaration({
kind: kind
})) {
return;
}
const firstNode = body[0].node.declarations[0];
if (!t.isIdentifier(firstNode.id) || !firstNode.init) {
return;
}
const init = path.get("init");
if (!init.isVariableDeclaration({
kind: kind
})) {
return;
}
init.pushContainer("declarations", t.variableDeclarator(firstNode.id));
body[0].replaceWith(t.assignmentExpression("=", t.clone(firstNode.id), t.clone(firstNode.init)));
}
}
return {
name: "transform-merge-sibling-variables",
visitor: {
ForStatement(path) {
// Lift declarations to the loop initializer
let body = path.get("body");
body = body.isBlockStatement() ? body.get("body") : [body];
liftDeclaration(path, body, "var");
liftDeclaration(path, body, "let");
},
VariableDeclaration: {
enter: [// concat variables of the same kind with their siblings
function (path) {
if (!path.inList) {
return;
}
const node = path.node;
let sibling = path.getSibling(path.key + 1);
let declarations = [];
while (sibling.isVariableDeclaration({
kind: node.kind
})) {
declarations = declarations.concat(sibling.node.declarations);
sibling.remove();
sibling = path.getSibling(path.key + 1);
}
if (declarations.length > 0) {
path.replaceWith(t.variableDeclaration(node.kind, [...node.declarations, ...declarations]));
}
}, // concat `var` declarations next to for loops with it's initialisers.
// block-scoped `let` and `const` are not moved because the for loop
// is a different block scope.
function (path) {
if (!path.inList) {
return;
}
const node = path.node;
if (node.kind !== "var") {
return;
}
const next = path.getSibling(path.key + 1);
if (!next.isForStatement()) {
return;
}
const init = next.get("init");
if (!init.isVariableDeclaration({
kind: node.kind
})) {
return;
}
const declarations = node.declarations.concat(init.node.declarations); // temporary workaround to forces babel recalculate scope,
// references and binding until babel/babel#4818 resolved
path.remove();
init.replaceWith(t.variableDeclaration("var", declarations));
}]
}
}
};
};

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{
"_from": "babel-plugin-transform-merge-sibling-variables@^6.9.2",
"_id": "babel-plugin-transform-merge-sibling-variables@6.9.2",
"_inBundle": false,
"_integrity": "sha1-mUqQBKecefDJHEluii28fptz97Q=",
"_location": "/babel-plugin-transform-merge-sibling-variables",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "babel-plugin-transform-merge-sibling-variables@^6.9.2",
"name": "babel-plugin-transform-merge-sibling-variables",
"escapedName": "babel-plugin-transform-merge-sibling-variables",
"rawSpec": "^6.9.2",
"saveSpec": null,
"fetchSpec": "^6.9.2"
},
"_requiredBy": [
"/babel-preset-minify"
],
"_resolved": "https://registry.npmjs.org/babel-plugin-transform-merge-sibling-variables/-/babel-plugin-transform-merge-sibling-variables-6.9.2.tgz",
"_shasum": "994a9004a79c79f0c91c496e8a2dbc7e9b73f7b4",
"_spec": "babel-plugin-transform-merge-sibling-variables@^6.9.2",
"_where": "/home/s2/Documents/Code/minifyfromhtml/node_modules/babel-preset-minify",
"author": {
"name": "amasad"
},
"bugs": {
"url": "https://github.com/babel/minify/issues"
},
"bundleDependencies": false,
"deprecated": false,
"description": "Merge sibling variables into one.",
"homepage": "https://github.com/babel/minify#readme",
"keywords": [
"babel-plugin"
],
"license": "MIT",
"main": "lib/index.js",
"name": "babel-plugin-transform-merge-sibling-variables",
"repository": {
"type": "git",
"url": "https://github.com/babel/minify/tree/master/packages/babel-plugin-transform-merge-sibling-variables"
},
"version": "6.9.2"
}