initial commit taken from gitlab.lrz.de

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privatereese
2018-08-24 18:09:42 +02:00
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commit fc05486403
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node_modules
*.log
src
test

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# babel-plugin-transform-es2015-parameters
> Compile ES2015 default and rest parameters to ES5
This plugin transforms ES2015 parameters to ES5, this includes:
- Destructuring parameters
- Default parameters
- Rest parameters
## Installation
```sh
npm install --save-dev babel-plugin-transform-es2015-parameters
```
## Caveats
Default parameters desugar into `let` declarations to retain proper semantics. If this is
not supported in your environment then you'll need the
[transform-block-scoping](http://babeljs.io/docs/plugins/transform-es2015-block-scoping) plugin.
## Usage
### Via `.babelrc` (Recommended)
**.babelrc**
```json
{
"plugins": ["transform-es2015-parameters"]
}
```
### Via CLI
```sh
babel --plugins transform-es2015-parameters script.js
```
### Via Node API
```javascript
require("babel-core").transform("code", {
plugins: ["transform-es2015-parameters"]
});
```

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"use strict";
exports.__esModule = true;
exports.visitor = undefined;
var _getIterator2 = require("babel-runtime/core-js/get-iterator");
var _getIterator3 = _interopRequireDefault(_getIterator2);
var _babelHelperGetFunctionArity = require("babel-helper-get-function-arity");
var _babelHelperGetFunctionArity2 = _interopRequireDefault(_babelHelperGetFunctionArity);
var _babelHelperCallDelegate = require("babel-helper-call-delegate");
var _babelHelperCallDelegate2 = _interopRequireDefault(_babelHelperCallDelegate);
var _babelTemplate = require("babel-template");
var _babelTemplate2 = _interopRequireDefault(_babelTemplate);
var _babelTypes = require("babel-types");
var t = _interopRequireWildcard(_babelTypes);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var buildDefaultParam = (0, _babelTemplate2.default)("\n let VARIABLE_NAME =\n ARGUMENTS.length > ARGUMENT_KEY && ARGUMENTS[ARGUMENT_KEY] !== undefined ?\n ARGUMENTS[ARGUMENT_KEY]\n :\n DEFAULT_VALUE;\n");
var buildCutOff = (0, _babelTemplate2.default)("\n let $0 = $1[$2];\n");
function hasDefaults(node) {
for (var _iterator = node.params, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
var _ref;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref = _i.value;
}
var param = _ref;
if (!t.isIdentifier(param)) return true;
}
return false;
}
function isSafeBinding(scope, node) {
if (!scope.hasOwnBinding(node.name)) return true;
var _scope$getOwnBinding = scope.getOwnBinding(node.name),
kind = _scope$getOwnBinding.kind;
return kind === "param" || kind === "local";
}
var iifeVisitor = {
ReferencedIdentifier: function ReferencedIdentifier(path, state) {
var scope = path.scope,
node = path.node;
if (node.name === "eval" || !isSafeBinding(scope, node)) {
state.iife = true;
path.stop();
}
},
Scope: function Scope(path) {
path.skip();
}
};
var visitor = exports.visitor = {
Function: function Function(path) {
var node = path.node,
scope = path.scope;
if (!hasDefaults(node)) return;
path.ensureBlock();
var state = {
iife: false,
scope: scope
};
var body = [];
var argsIdentifier = t.identifier("arguments");
argsIdentifier._shadowedFunctionLiteral = path;
function pushDefNode(left, right, i) {
var defNode = buildDefaultParam({
VARIABLE_NAME: left,
DEFAULT_VALUE: right,
ARGUMENT_KEY: t.numericLiteral(i),
ARGUMENTS: argsIdentifier
});
defNode._blockHoist = node.params.length - i;
body.push(defNode);
}
var lastNonDefaultParam = (0, _babelHelperGetFunctionArity2.default)(node);
var params = path.get("params");
for (var i = 0; i < params.length; i++) {
var param = params[i];
if (!param.isAssignmentPattern()) {
if (!state.iife && !param.isIdentifier()) {
param.traverse(iifeVisitor, state);
}
continue;
}
var left = param.get("left");
var right = param.get("right");
if (i >= lastNonDefaultParam || left.isPattern()) {
var placeholder = scope.generateUidIdentifier("x");
placeholder._isDefaultPlaceholder = true;
node.params[i] = placeholder;
} else {
node.params[i] = left.node;
}
if (!state.iife) {
if (right.isIdentifier() && !isSafeBinding(scope, right.node)) {
state.iife = true;
} else {
right.traverse(iifeVisitor, state);
}
}
pushDefNode(left.node, right.node, i);
}
for (var _i2 = lastNonDefaultParam + 1; _i2 < node.params.length; _i2++) {
var _param = node.params[_i2];
if (_param._isDefaultPlaceholder) continue;
var declar = buildCutOff(_param, argsIdentifier, t.numericLiteral(_i2));
declar._blockHoist = node.params.length - _i2;
body.push(declar);
}
node.params = node.params.slice(0, lastNonDefaultParam);
if (state.iife) {
body.push((0, _babelHelperCallDelegate2.default)(path, scope));
path.set("body", t.blockStatement(body));
} else {
path.get("body").unshiftContainer("body", body);
}
}
};

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"use strict";
exports.__esModule = true;
exports.visitor = undefined;
var _babelTypes = require("babel-types");
var t = _interopRequireWildcard(_babelTypes);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
var visitor = exports.visitor = {
Function: function Function(path) {
var params = path.get("params");
var hoistTweak = t.isRestElement(params[params.length - 1]) ? 1 : 0;
var outputParamsLength = params.length - hoistTweak;
for (var i = 0; i < outputParamsLength; i++) {
var param = params[i];
if (param.isArrayPattern() || param.isObjectPattern()) {
var uid = path.scope.generateUidIdentifier("ref");
var declar = t.variableDeclaration("let", [t.variableDeclarator(param.node, uid)]);
declar._blockHoist = outputParamsLength - i;
path.ensureBlock();
path.get("body").unshiftContainer("body", declar);
param.replaceWith(uid);
}
}
}
};

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"use strict";
exports.__esModule = true;
var _getIterator2 = require("babel-runtime/core-js/get-iterator");
var _getIterator3 = _interopRequireDefault(_getIterator2);
exports.default = function () {
return {
visitor: _babelTraverse.visitors.merge([{
ArrowFunctionExpression: function ArrowFunctionExpression(path) {
var params = path.get("params");
for (var _iterator = params, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
var _ref;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref = _i.value;
}
var param = _ref;
if (param.isRestElement() || param.isAssignmentPattern()) {
path.arrowFunctionToShadowed();
break;
}
}
}
}, destructuring.visitor, rest.visitor, def.visitor])
};
};
var _babelTraverse = require("babel-traverse");
var _destructuring = require("./destructuring");
var destructuring = _interopRequireWildcard(_destructuring);
var _default = require("./default");
var def = _interopRequireWildcard(_default);
var _rest = require("./rest");
var rest = _interopRequireWildcard(_rest);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
module.exports = exports["default"];

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"use strict";
exports.__esModule = true;
exports.visitor = undefined;
var _getIterator2 = require("babel-runtime/core-js/get-iterator");
var _getIterator3 = _interopRequireDefault(_getIterator2);
var _babelTemplate = require("babel-template");
var _babelTemplate2 = _interopRequireDefault(_babelTemplate);
var _babelTypes = require("babel-types");
var t = _interopRequireWildcard(_babelTypes);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var buildRest = (0, _babelTemplate2.default)("\n for (var LEN = ARGUMENTS.length,\n ARRAY = Array(ARRAY_LEN),\n KEY = START;\n KEY < LEN;\n KEY++) {\n ARRAY[ARRAY_KEY] = ARGUMENTS[KEY];\n }\n");
var restIndex = (0, _babelTemplate2.default)("\n ARGUMENTS.length <= INDEX ? undefined : ARGUMENTS[INDEX]\n");
var restIndexImpure = (0, _babelTemplate2.default)("\n REF = INDEX, ARGUMENTS.length <= REF ? undefined : ARGUMENTS[REF]\n");
var restLength = (0, _babelTemplate2.default)("\n ARGUMENTS.length <= OFFSET ? 0 : ARGUMENTS.length - OFFSET\n");
var memberExpressionOptimisationVisitor = {
Scope: function Scope(path, state) {
if (!path.scope.bindingIdentifierEquals(state.name, state.outerBinding)) {
path.skip();
}
},
Flow: function Flow(path) {
if (path.isTypeCastExpression()) return;
path.skip();
},
"Function|ClassProperty": function FunctionClassProperty(path, state) {
var oldNoOptimise = state.noOptimise;
state.noOptimise = true;
path.traverse(memberExpressionOptimisationVisitor, state);
state.noOptimise = oldNoOptimise;
path.skip();
},
ReferencedIdentifier: function ReferencedIdentifier(path, state) {
var node = path.node;
if (node.name === "arguments") {
state.deopted = true;
}
if (node.name !== state.name) return;
if (state.noOptimise) {
state.deopted = true;
} else {
var parentPath = path.parentPath;
if (parentPath.listKey === "params" && parentPath.key < state.offset) {
return;
}
if (parentPath.isMemberExpression({ object: node })) {
var grandparentPath = parentPath.parentPath;
var argsOptEligible = !state.deopted && !(grandparentPath.isAssignmentExpression() && parentPath.node === grandparentPath.node.left || grandparentPath.isLVal() || grandparentPath.isForXStatement() || grandparentPath.isUpdateExpression() || grandparentPath.isUnaryExpression({ operator: "delete" }) || (grandparentPath.isCallExpression() || grandparentPath.isNewExpression()) && parentPath.node === grandparentPath.node.callee);
if (argsOptEligible) {
if (parentPath.node.computed) {
if (parentPath.get("property").isBaseType("number")) {
state.candidates.push({ cause: "indexGetter", path: path });
return;
}
} else if (parentPath.node.property.name === "length") {
state.candidates.push({ cause: "lengthGetter", path: path });
return;
}
}
}
if (state.offset === 0 && parentPath.isSpreadElement()) {
var call = parentPath.parentPath;
if (call.isCallExpression() && call.node.arguments.length === 1) {
state.candidates.push({ cause: "argSpread", path: path });
return;
}
}
state.references.push(path);
}
},
BindingIdentifier: function BindingIdentifier(_ref, state) {
var node = _ref.node;
if (node.name === state.name) {
state.deopted = true;
}
}
};
function hasRest(node) {
return t.isRestElement(node.params[node.params.length - 1]);
}
function optimiseIndexGetter(path, argsId, offset) {
var index = void 0;
if (t.isNumericLiteral(path.parent.property)) {
index = t.numericLiteral(path.parent.property.value + offset);
} else if (offset === 0) {
index = path.parent.property;
} else {
index = t.binaryExpression("+", path.parent.property, t.numericLiteral(offset));
}
var scope = path.scope;
if (!scope.isPure(index)) {
var temp = scope.generateUidIdentifierBasedOnNode(index);
scope.push({ id: temp, kind: "var" });
path.parentPath.replaceWith(restIndexImpure({
ARGUMENTS: argsId,
INDEX: index,
REF: temp
}));
} else {
path.parentPath.replaceWith(restIndex({
ARGUMENTS: argsId,
INDEX: index
}));
}
}
function optimiseLengthGetter(path, argsId, offset) {
if (offset) {
path.parentPath.replaceWith(restLength({
ARGUMENTS: argsId,
OFFSET: t.numericLiteral(offset)
}));
} else {
path.replaceWith(argsId);
}
}
var visitor = exports.visitor = {
Function: function Function(path) {
var node = path.node,
scope = path.scope;
if (!hasRest(node)) return;
var rest = node.params.pop().argument;
var argsId = t.identifier("arguments");
argsId._shadowedFunctionLiteral = path;
var state = {
references: [],
offset: node.params.length,
argumentsNode: argsId,
outerBinding: scope.getBindingIdentifier(rest.name),
candidates: [],
name: rest.name,
deopted: false
};
path.traverse(memberExpressionOptimisationVisitor, state);
if (!state.deopted && !state.references.length) {
for (var _iterator = state.candidates, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
var _ref3;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref3 = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref3 = _i.value;
}
var _ref4 = _ref3;
var _path = _ref4.path,
cause = _ref4.cause;
switch (cause) {
case "indexGetter":
optimiseIndexGetter(_path, argsId, state.offset);
break;
case "lengthGetter":
optimiseLengthGetter(_path, argsId, state.offset);
break;
default:
_path.replaceWith(argsId);
}
}
return;
}
state.references = state.references.concat(state.candidates.map(function (_ref5) {
var path = _ref5.path;
return path;
}));
state.deopted = state.deopted || !!node.shadow;
var start = t.numericLiteral(node.params.length);
var key = scope.generateUidIdentifier("key");
var len = scope.generateUidIdentifier("len");
var arrKey = key;
var arrLen = len;
if (node.params.length) {
arrKey = t.binaryExpression("-", key, start);
arrLen = t.conditionalExpression(t.binaryExpression(">", len, start), t.binaryExpression("-", len, start), t.numericLiteral(0));
}
var loop = buildRest({
ARGUMENTS: argsId,
ARRAY_KEY: arrKey,
ARRAY_LEN: arrLen,
START: start,
ARRAY: rest,
KEY: key,
LEN: len
});
if (state.deopted) {
loop._blockHoist = node.params.length + 1;
node.body.body.unshift(loop);
} else {
loop._blockHoist = 1;
var target = path.getEarliestCommonAncestorFrom(state.references).getStatementParent();
target.findParent(function (path) {
if (path.isLoop()) {
target = path;
} else {
return path.isFunction();
}
});
target.insertBefore(loop);
}
}
};

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"babel-plugin-transform-es2015-parameters@^6.8.0",
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"_from": "babel-plugin-transform-es2015-parameters@>=6.8.0 <7.0.0",
"_id": "babel-plugin-transform-es2015-parameters@6.24.1",
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"_installable": true,
"_location": "/babel-plugin-transform-es2015-parameters",
"_nodeVersion": "6.9.0",
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"host": "packages-12-west.internal.npmjs.com",
"tmp": "tmp/babel-plugin-transform-es2015-parameters-6.24.1.tgz_1491578364122_0.5907053858973086"
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"email": "hi@henryzoo.com",
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"spec": ">=6.8.0 <7.0.0",
"type": "range"
},
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"/babel-preset-es2015-node",
"/babel-preset-fbjs",
"/babel-preset-react-native"
],
"_resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-parameters/-/babel-plugin-transform-es2015-parameters-6.24.1.tgz",
"_shasum": "57ac351ab49caf14a97cd13b09f66fdf0a625f2b",
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"_spec": "babel-plugin-transform-es2015-parameters@^6.8.0",
"_where": "/home/bernhard/freifunk-app/node_modules/babel-preset-fbjs",
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"babel-runtime": "^6.22.0",
"babel-template": "^6.24.1",
"babel-traverse": "^6.24.1",
"babel-types": "^6.24.1"
},
"description": "Compile ES2015 default and rest parameters to ES5",
"devDependencies": {
"babel-helper-plugin-test-runner": "^6.24.1"
},
"directories": {},
"dist": {
"shasum": "57ac351ab49caf14a97cd13b09f66fdf0a625f2b",
"tarball": "https://registry.npmjs.org/babel-plugin-transform-es2015-parameters/-/babel-plugin-transform-es2015-parameters-6.24.1.tgz"
},
"keywords": [
"babel-plugin"
],
"license": "MIT",
"main": "lib/index.js",
"maintainers": [
{
"name": "amasad",
"email": "amjad.masad@gmail.com"
},
{
"name": "hzoo",
"email": "hi@henryzoo.com"
},
{
"name": "jmm",
"email": "npm-public@jessemccarthy.net"
},
{
"name": "loganfsmyth",
"email": "loganfsmyth@gmail.com"
},
{
"name": "sebmck",
"email": "sebmck@gmail.com"
},
{
"name": "thejameskyle",
"email": "me@thejameskyle.com"
}
],
"name": "babel-plugin-transform-es2015-parameters",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-es2015-parameters"
},
"scripts": {},
"version": "6.24.1"
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