function transform(file, { j }, options) { const root = j(file.source); const { identifier } = removeImport('object.defineproperties', root, j); root .find(j.CallExpression, { callee: { name: identifier } }) .replaceWith(({ node }) => { return j.callExpression( j.memberExpression( j.identifier('Object'), j.identifier('defineProperties') ), node.arguments ); }); return root.toSource(options); } export default transform; function removeImport(name, root, j) { // Find the import or require statement for 'is-boolean-object' const importDeclaration = root.find(j.ImportDeclaration, { source: { value: name } }); const requireDeclaration = root .find(j.CallExpression, { callee: { name: 'require' }, arguments: [ { value: name } ] }) .closest(j.VariableDeclarator); // Require statements without declarations like `Object.is = require("object-is");` const requireAssignment = root.find(j.AssignmentExpression, { operator: '=', right: { callee: { name: 'require' }, arguments: [ { value: name } ] } }); // Side effect requires statements like `require("error-cause/auto");` const sideEffectRequireExpression = root.find(j.ExpressionStatement, { expression: { callee: { name: 'require' }, arguments: [ { value: name } ] } }); // Return the identifier name, e.g. 'fn' in `import { fn } from 'is-boolean-object'` // or `var fn = require('is-boolean-object')` const identifier = importDeclaration.paths().length > 0 ? importDeclaration.get().node.specifiers[0].local.name : requireDeclaration.paths().length > 0 ? requireDeclaration.find(j.Identifier).get().node.name : requireAssignment.paths().length > 0 ? requireAssignment.find(j.Identifier).get().node.name : null; importDeclaration.remove(); requireDeclaration.remove(); requireAssignment.remove(); sideEffectRequireExpression.remove(); const dirtyFlag = importDeclaration.length > 0 || requireDeclaration.length > 0 || requireAssignment.length > 0 || sideEffectRequireExpression.length > 0; return { identifier, dirtyFlag }; }
Input
var assert = require('assert'); var defineProperties = require('object.defineproperties'); var descriptors = { a: { value: 2 }, c: { configurable: true, enumerable: true, value: 3, writable: true } }; var obj = { a: 1, b: 2 }; var result = defineProperties(obj, descriptors); assert.equal(obj, result); // same object assert.deepEqual(obj, { a: 2, b: 2, c: 3 }); defineProperties.shim(); assert.deepEqual( Object.defineProperties({ a: 1, b: 2 }, descriptors), defineProperties({ a: 1, b: 2 }, descriptors) );
Output
loading
Read-only