Changing front

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ewandor committed 2023-01-16 17:49:38 +01:00
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MIT License
Copyright (c) 2014-present Sebastian McKenzie and other contributors
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# @babel/helper-function-name
> Helper function to change the property 'name' of every function
See our website [@babel/helper-function-name](https://babeljs.io/docs/en/babel-helper-function-name) for more information.
## Install
Using npm:
```sh
npm install --save @babel/helper-function-name
```
or using yarn:
```sh
yarn add @babel/helper-function-name
```
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = _default;
var _template = require("@babel/template");
var _t = require("@babel/types");
const {
NOT_LOCAL_BINDING,
cloneNode,
identifier,
isAssignmentExpression,
isAssignmentPattern,
isFunction,
isIdentifier,
isLiteral,
isNullLiteral,
isObjectMethod,
isObjectProperty,
isRegExpLiteral,
isRestElement,
isTemplateLiteral,
isVariableDeclarator,
toBindingIdentifierName
} = _t;
function getFunctionArity(node) {
const count = node.params.findIndex(param => isAssignmentPattern(param) || isRestElement(param));
return count === -1 ? node.params.length : count;
}
const buildPropertyMethodAssignmentWrapper = _template.default.statement(`
(function (FUNCTION_KEY) {
function FUNCTION_ID() {
return FUNCTION_KEY.apply(this, arguments);
}
FUNCTION_ID.toString = function () {
return FUNCTION_KEY.toString();
}
return FUNCTION_ID;
})(FUNCTION)
`);
const buildGeneratorPropertyMethodAssignmentWrapper = _template.default.statement(`
(function (FUNCTION_KEY) {
function* FUNCTION_ID() {
return yield* FUNCTION_KEY.apply(this, arguments);
}
FUNCTION_ID.toString = function () {
return FUNCTION_KEY.toString();
};
return FUNCTION_ID;
})(FUNCTION)
`);
const visitor = {
"ReferencedIdentifier|BindingIdentifier"(path, state) {
if (path.node.name !== state.name) return;
const localDeclar = path.scope.getBindingIdentifier(state.name);
if (localDeclar !== state.outerDeclar) return;
state.selfReference = true;
path.stop();
}
};
function getNameFromLiteralId(id) {
if (isNullLiteral(id)) {
return "null";
}
if (isRegExpLiteral(id)) {
return `_${id.pattern}_${id.flags}`;
}
if (isTemplateLiteral(id)) {
return id.quasis.map(quasi => quasi.value.raw).join("");
}
if (id.value !== undefined) {
return id.value + "";
}
return "";
}
function wrap(state, method, id, scope) {
if (state.selfReference) {
if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) {
scope.rename(id.name);
} else {
if (!isFunction(method)) return;
let build = buildPropertyMethodAssignmentWrapper;
if (method.generator) {
build = buildGeneratorPropertyMethodAssignmentWrapper;
}
const template = build({
FUNCTION: method,
FUNCTION_ID: id,
FUNCTION_KEY: scope.generateUidIdentifier(id.name)
}).expression;
const params = template.callee.body.body[0].params;
for (let i = 0, len = getFunctionArity(method); i < len; i++) {
params.push(scope.generateUidIdentifier("x"));
}
return template;
}
}
method.id = id;
scope.getProgramParent().references[id.name] = true;
}
function visit(node, name, scope) {
const state = {
selfAssignment: false,
selfReference: false,
outerDeclar: scope.getBindingIdentifier(name),
name: name
};
const binding = scope.getOwnBinding(name);
if (binding) {
if (binding.kind === "param") {
state.selfReference = true;
} else {}
} else if (state.outerDeclar || scope.hasGlobal(name)) {
scope.traverse(node, visitor, state);
}
return state;
}
function _default({
node,
parent,
scope,
id
}, localBinding = false, supportUnicodeId = false) {
if (node.id) return;
if ((isObjectProperty(parent) || isObjectMethod(parent, {
kind: "method"
})) && (!parent.computed || isLiteral(parent.key))) {
id = parent.key;
} else if (isVariableDeclarator(parent)) {
id = parent.id;
if (isIdentifier(id) && !localBinding) {
const binding = scope.parent.getBinding(id.name);
if (binding && binding.constant && scope.getBinding(id.name) === binding) {
node.id = cloneNode(id);
node.id[NOT_LOCAL_BINDING] = true;
return;
}
}
} else if (isAssignmentExpression(parent, {
operator: "="
})) {
id = parent.left;
} else if (!id) {
return;
}
let name;
if (id && isLiteral(id)) {
name = getNameFromLiteralId(id);
} else if (id && isIdentifier(id)) {
name = id.name;
}
if (name === undefined) {
return;
}
if (!supportUnicodeId && isFunction(node) && /[\uD800-\uDFFF]/.test(name)) {
return;
}
name = toBindingIdentifierName(name);
const newId = identifier(name);
newId[NOT_LOCAL_BINDING] = true;
const state = visit(node, name, scope);
return wrap(state, node, newId, scope) || node;
}
//# sourceMappingURL=index.js.map
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{"version":3,"names":["NOT_LOCAL_BINDING","cloneNode","identifier","isAssignmentExpression","isAssignmentPattern","isFunction","isIdentifier","isLiteral","isNullLiteral","isObjectMethod","isObjectProperty","isRegExpLiteral","isRestElement","isTemplateLiteral","isVariableDeclarator","toBindingIdentifierName","getFunctionArity","node","count","params","findIndex","param","length","buildPropertyMethodAssignmentWrapper","template","statement","buildGeneratorPropertyMethodAssignmentWrapper","visitor","path","state","name","localDeclar","scope","getBindingIdentifier","outerDeclar","selfReference","stop","getNameFromLiteralId","id","pattern","flags","quasis","map","quasi","value","raw","join","undefined","wrap","method","hasBinding","hasGlobal","rename","build","generator","FUNCTION","FUNCTION_ID","FUNCTION_KEY","generateUidIdentifier","expression","callee","body","i","len","push","getProgramParent","references","visit","selfAssignment","binding","getOwnBinding","kind","traverse","parent","localBinding","supportUnicodeId","computed","key","getBinding","constant","operator","left","test","newId"],"sources":["../src/index.ts"],"sourcesContent":["import template from \"@babel/template\";\nimport {\n NOT_LOCAL_BINDING,\n cloneNode,\n identifier,\n isAssignmentExpression,\n isAssignmentPattern,\n isFunction,\n isIdentifier,\n isLiteral,\n isNullLiteral,\n isObjectMethod,\n isObjectProperty,\n isRegExpLiteral,\n isRestElement,\n isTemplateLiteral,\n isVariableDeclarator,\n toBindingIdentifierName,\n} from \"@babel/types\";\nimport type * as t from \"@babel/types\";\nimport type { NodePath, Scope, Visitor } from \"@babel/traverse\";\n\nfunction getFunctionArity(node: t.Function): number {\n const count = node.params.findIndex(\n param => isAssignmentPattern(param) || isRestElement(param),\n );\n return count === -1 ? node.params.length : count;\n}\n\nconst buildPropertyMethodAssignmentWrapper = template.statement(`\n (function (FUNCTION_KEY) {\n function FUNCTION_ID() {\n return FUNCTION_KEY.apply(this, arguments);\n }\n\n FUNCTION_ID.toString = function () {\n return FUNCTION_KEY.toString();\n }\n\n return FUNCTION_ID;\n })(FUNCTION)\n`);\n\nconst buildGeneratorPropertyMethodAssignmentWrapper = template.statement(`\n (function (FUNCTION_KEY) {\n function* FUNCTION_ID() {\n return yield* FUNCTION_KEY.apply(this, arguments);\n }\n\n FUNCTION_ID.toString = function () {\n return FUNCTION_KEY.toString();\n };\n\n return FUNCTION_ID;\n })(FUNCTION)\n`);\n\ntype State = {\n name: string;\n outerDeclar: t.Identifier;\n selfAssignment: boolean;\n selfReference: boolean;\n};\n\nconst visitor: Visitor<State> = {\n \"ReferencedIdentifier|BindingIdentifier\"(\n path: NodePath<t.Identifier>,\n state,\n ) {\n // check if this node matches our function id\n if (path.node.name !== state.name) return;\n\n // check that we don't have a local variable declared as that removes the need\n // for the wrapper\n const localDeclar = path.scope.getBindingIdentifier(state.name);\n if (localDeclar !== state.outerDeclar) return;\n\n state.selfReference = true;\n path.stop();\n },\n};\n\nfunction getNameFromLiteralId(id: t.Literal) {\n if (isNullLiteral(id)) {\n return \"null\";\n }\n\n if (isRegExpLiteral(id)) {\n return `_${id.pattern}_${id.flags}`;\n }\n\n if (isTemplateLiteral(id)) {\n return id.quasis.map(quasi => quasi.value.raw).join(\"\");\n }\n\n if (id.value !== undefined) {\n return id.value + \"\";\n }\n\n return \"\";\n}\n\nfunction wrap(\n state: State,\n method: t.FunctionExpression | t.Class,\n id: t.Identifier,\n scope: Scope,\n) {\n if (state.selfReference) {\n if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) {\n // we can just munge the local binding\n scope.rename(id.name);\n } else {\n // we don't currently support wrapping class expressions\n if (!isFunction(method)) return;\n\n // need to add a wrapper since we can't change the references\n let build = buildPropertyMethodAssignmentWrapper;\n if (method.generator) {\n build = buildGeneratorPropertyMethodAssignmentWrapper;\n }\n\n const template = (\n build({\n FUNCTION: method,\n FUNCTION_ID: id,\n FUNCTION_KEY: scope.generateUidIdentifier(id.name),\n }) as t.ExpressionStatement\n ).expression as t.CallExpression;\n\n // shim in dummy params to retain function arity, if you try to read the\n // source then you'll get the original since it's proxied so it's all good\n const params = (\n (template.callee as t.FunctionExpression).body\n .body[0] as any as t.FunctionExpression\n ).params;\n\n for (let i = 0, len = getFunctionArity(method); i < len; i++) {\n params.push(scope.generateUidIdentifier(\"x\"));\n }\n\n return template;\n }\n }\n\n method.id = id;\n scope.getLine truncated
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{
"name": "@babel/helper-function-name",
"version": "7.19.0",
"description": "Helper function to change the property 'name' of every function",
"repository": {
"type": "git",
"url": "https://github.com/babel/babel.git",
"directory": "packages/babel-helper-function-name"
},
"homepage": "https://babel.dev/docs/en/next/babel-helper-function-name",
"license": "MIT",
"publishConfig": {
"access": "public"
},
"main": "./lib/index.js",
"dependencies": {
"@babel/template": "^7.18.10",
"@babel/types": "^7.19.0"
},
"engines": {
"node": ">=6.9.0"
},
"author": "The Babel Team (https://babel.dev/team)",
"type": "commonjs"
}