function transform(file, { j }, options) { const root = j(file.source); const dirty = transformArrayMethod('array-every', 'every', root, j); return dirty ? root.toSource(options) : file.source; } export default transform; function transformArrayMethod(method, identifierName, root, j) { const { identifier, dirtyFlag: importDirtyFlag } = removeImport( method, root, j, ); let dirtyFlag = importDirtyFlag; root .find(j.CallExpression, { callee: { type: 'Identifier', name: identifier, }, }) .forEach((path) => { const [arrayArg, ...otherArgs] = path.node.arguments; if (j.Identifier.check(arrayArg) || j.ArrayExpression.check(arrayArg)) { path.replace( j.callExpression( j.memberExpression(arrayArg, j.identifier(identifierName)), otherArgs, ), ); dirtyFlag = true; } }); return dirtyFlag; } 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 every = require('array-every'); every(['a', 'b', 'c'], function (ele) { return ele === 'a'; }); every(['a', 'a', 'a'], function (ele) { return ele === 'a'; });
Output
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