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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.
@@ -0,0 +1,19 @@
# @babel/plugin-transform-exponentiation-operator
> Compile exponentiation operator to ES5
See our website [@babel/plugin-transform-exponentiation-operator](https://babeljs.io/docs/babel-plugin-transform-exponentiation-operator) for more information.
## Install
Using npm:
```sh
npm install --save-dev @babel/plugin-transform-exponentiation-operator
```
or using yarn:
```sh
yarn add @babel/plugin-transform-exponentiation-operator --dev
```
@@ -0,0 +1,82 @@
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _helperPluginUtils = require("@babel/helper-plugin-utils");
var _default = exports.default = (0, _helperPluginUtils.declare)(api => {
api.assertVersion("^7.0.0-0 || ^8.0.0-0 || >8.0.0-alpha <8.0.0-beta");
const {
types: t,
template
} = api;
function build(left, right) {
return t.callExpression(t.memberExpression(t.identifier("Math"), t.identifier("pow")), [left, right]);
}
function maybeMemoize(node, scope) {
if (scope.isStatic(node)) {
return {
assign: node,
ref: t.cloneNode(node)
};
}
if (scope.path.isPattern()) {
return null;
}
const id = scope.generateUidIdentifierBasedOnNode(node);
scope.push({
id
});
return {
assign: t.assignmentExpression("=", t.cloneNode(id), node),
ref: t.cloneNode(id)
};
}
return {
name: "transform-exponentiation-operator",
visitor: {
AssignmentExpression(path) {
const {
node,
scope
} = path;
if (node.operator !== "**=") return;
if (t.isMemberExpression(node.left)) {
let member1;
let member2;
const object = maybeMemoize(node.left.object, scope);
if (!object) {
path.replaceWith(template.expression.ast`(() => ${path.node})()`);
return;
}
const {
property,
computed
} = node.left;
if (computed) {
const prop = maybeMemoize(property, scope);
member1 = t.memberExpression(object.assign, prop.assign, true);
member2 = t.memberExpression(object.ref, prop.ref, true);
} else {
member1 = t.memberExpression(object.assign, property, false);
member2 = t.memberExpression(object.ref, t.cloneNode(property), false);
}
path.replaceWith(t.assignmentExpression("=", member1, build(member2, node.right)));
} else {
path.replaceWith(t.assignmentExpression("=", node.left, build(t.cloneNode(node.left), node.right)));
}
},
BinaryExpression(path) {
const {
node
} = path;
if (node.operator === "**") {
path.replaceWith(build(node.left, node.right));
}
}
}
};
});
//# sourceMappingURL=index.js.map
@@ -0,0 +1 @@
{"version":3,"names":["_helperPluginUtils","require","_default","exports","default","declare","api","assertVersion","types","t","template","build","left","right","callExpression","memberExpression","identifier","maybeMemoize","node","scope","isStatic","assign","ref","cloneNode","path","isPattern","id","generateUidIdentifierBasedOnNode","push","assignmentExpression","name","visitor","AssignmentExpression","operator","isMemberExpression","member1","member2","object","replaceWith","expression","ast","property","computed","prop","BinaryExpression"],"sources":["../src/index.ts"],"sourcesContent":["import { declare } from \"@babel/helper-plugin-utils\";\nimport type { types as t, Scope } from \"@babel/core\";\n\nexport default declare(api => {\n api.assertVersion(REQUIRED_VERSION(\"^7.0.0-0 || ^8.0.0-0\"));\n\n const { types: t, template } = api;\n\n function build(left: t.Expression, right: t.Expression) {\n return t.callExpression(\n t.memberExpression(t.identifier(\"Math\"), t.identifier(\"pow\")),\n [left, right],\n );\n }\n\n function maybeMemoize<T extends t.Expression | t.Super>(\n node: T,\n scope: Scope,\n ) {\n if (scope.isStatic(node)) {\n return { assign: node, ref: t.cloneNode(node) };\n }\n\n if (scope.path.isPattern()) {\n // We cannot inject a temp var in function arguments.\n return null;\n }\n\n const id = scope.generateUidIdentifierBasedOnNode(node);\n scope.push({ id });\n return {\n assign: t.assignmentExpression(\n \"=\",\n t.cloneNode(id),\n // This is not t.Super, because otherwise the .isStatic check above\n // would have returned true.\n // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion\n node as t.Expression,\n ),\n ref: t.cloneNode(id),\n };\n }\n\n return {\n name: \"transform-exponentiation-operator\",\n\n visitor: {\n AssignmentExpression(path) {\n const { node, scope } = path;\n if (node.operator !== \"**=\") return;\n\n if (t.isMemberExpression(node.left)) {\n let member1: t.Expression;\n let member2: t.Expression;\n\n const object = maybeMemoize(node.left.object, scope);\n if (!object) {\n // We need to inject a temp var, but we are in function parameters\n // and thus cannot. Wrap the expression in an IIFE. It will be\n // eventually requeued and transformed.\n path.replaceWith(template.expression.ast`(() => ${path.node})()`);\n return;\n }\n\n const { property, computed } = node.left;\n\n if (computed) {\n // @ts-ignore(Babel 7 vs Babel 8) Babel 8 has better type definitions\n const prop = maybeMemoize(property, scope);\n member1 = t.memberExpression(object.assign, prop.assign, true);\n member2 = t.memberExpression(object.ref, prop.ref, true);\n } else {\n member1 = t.memberExpression(object.assign, property, false);\n member2 = t.memberExpression(\n object.ref,\n t.cloneNode(property),\n false,\n );\n }\n\n path.replaceWith(\n t.assignmentExpression(\"=\", member1, build(member2, node.right)),\n );\n } else {\n path.replaceWith(\n t.assignmentExpression(\n \"=\",\n node.left,\n build(\n // todo: it could be a t.AsExpression\n t.cloneNode(node.left) as t.Identifier,\n node.right,\n ),\n ),\n );\n }\n },\n\n BinaryExpression(path) {\n const { node } = path;\n if (node.operator === \"**\") {\n path.replaceWith(\n build(\n // left can be PrivateName only if operator is `\"in\"`\n node.left as t.Expression,\n node.right,\n ),\n );\n }\n },\n },\n };\n});\n"],"mappings":";;;;;;AAAA,IAAAA,kBAAA,GAAAC,OAAA;AAAqD,IAAAC,QAAA,GAAAC,OAAA,CAAAC,OAAA,GAGtC,IAAAC,0BAAO,EAACC,GAAG,IAAI;EAC5BA,GAAG,CAACC,aAAa,mDAAyC,CAAC;EAE3D,MAAM;IAAEC,KAAK,EAAEC,CAAC;IAAEC;EAAS,CAAC,GAAGJ,GAAG;EAElC,SAASK,KAAKA,CAACC,IAAkB,EAAEC,KAAmB,EAAE;IACtD,OAAOJ,CAAC,CAACK,cAAc,CACrBL,CAAC,CAACM,gBAAgB,CAACN,CAAC,CAACO,UAAU,CAAC,MAAM,CAAC,EAAEP,CAAC,CAACO,UAAU,CAAC,KAAK,CAAC,CAAC,EAC7D,CAACJ,IAAI,EAAEC,KAAK,CACd,CAAC;EACH;EAEA,SAASI,YAAYA,CACnBC,IAAO,EACPC,KAAY,EACZ;IACA,IAAIA,KAAK,CAACC,QAAQ,CAACF,IAAI,CAAC,EAAE;MACxB,OAAO;QAAEG,MAAM,EAAEH,IAAI;QAAEI,GAAG,EAAEb,CAAC,CAACc,SAAS,CAACL,IAAI;MAAE,CAAC;IACjD;IAEA,IAAIC,KAAK,CAACK,IAAI,CAACC,SAAS,CAAC,CAAC,EAAE;MAE1B,OAAO,IAAI;IACb;IAEA,MAAMC,EAAE,GAAGP,KAAK,CAACQ,gCAAgC,CAACT,IAAI,CAAC;IACvDC,KAAK,CAACS,IAAI,CAAC;MAAEF;IAAG,CAAC,CAAC;IAClB,OAAO;MACLL,MAAM,EAAEZ,CAAC,CAACoB,oBAAoB,CAC5B,GAAG,EACHpB,CAAC,CAACc,SAAS,CAACG,EAAE,CAAC,EAIfR,IACF,CAAC;MACDLine truncated
@@ -0,0 +1,34 @@
{
"name": "@babel/plugin-transform-exponentiation-operator",
"version": "7.29.7",
"description": "Compile exponentiation operator to ES5",
"repository": {
"type": "git",
"url": "https://github.com/babel/babel.git",
"directory": "packages/babel-plugin-transform-exponentiation-operator"
},
"homepage": "https://babel.dev/docs/en/next/babel-plugin-transform-exponentiation-operator",
"license": "MIT",
"publishConfig": {
"access": "public"
},
"main": "./lib/index.js",
"keywords": [
"babel-plugin"
],
"dependencies": {
"@babel/helper-plugin-utils": "^7.29.7"
},
"peerDependencies": {
"@babel/core": "^7.0.0-0"
},
"devDependencies": {
"@babel/core": "^7.29.7",
"@babel/helper-plugin-test-runner": "^7.29.7"
},
"engines": {
"node": ">=6.9.0"
},
"author": "The Babel Team (https://babel.dev/team)",
"type": "commonjs"
}