Merge pull request #58 from donecarlo/xtend

add codemod for xtend

codemods/xtend/index.js

@@ -0,0 +1,38 @@
+import jscodeshift from 'jscodeshift';
+import { removeImport } from '../shared.js';
+
+/**
+ * @typedef {import('../../types.js').Codemod} Codemod
+ * @typedef {import('../../types.js').CodemodOptions} CodemodOptions
+ */
+
+/**
+ * @param {CodemodOptions} [options]
+ * @returns {Codemod}
+ */
+export default function (options) {
+	return {
+		name: 'xtend',
+		transform: ({ file }) => {
+			const j = jscodeshift;
+			const root = j(file.source);
+
+			const { identifier } = removeImport('xtend', root, j);
+
+			root
+				.find(j.CallExpression, {
+					callee: {
+						name: identifier,
+					},
+				})
+				.replaceWith(({ node }) => {
+					return j.objectExpression(
+						//@ts-ignore
+						node.arguments.map((arg) => j.spreadElement(arg)),
+					);
+				});
+
+			return root.toSource(options);
+		},
+	};
+}

test/fixtures/xtend/case-1/after.js

@@ -0,0 +1,17 @@
+const assert = require('assert');
+
+const objectA = {
+  a: 1,
+  b: 2,
+  c: 3,
+};
+
+const objectB = {
+  a: 20,
+  d: 40,
+};
+
+assert.equal({
+  ...objectA,
+  ...objectB
+}, { a: 20, b: 2, c: 3, d: 40 });

test/fixtures/xtend/case-1/before.js

@@ -0,0 +1,15 @@
+const extend = require('xtend');
+const assert = require('assert');
+
+const objectA = {
+  a: 1,
+  b: 2,
+  c: 3,
+};
+
+const objectB = {
+  a: 20,
+  d: 40,
+};
+
+assert.equal(extend(objectA, objectB), { a: 20, b: 2, c: 3, d: 40 });

test/fixtures/xtend/case-1/result.js

@@ -0,0 +1,17 @@
+const assert = require('assert');
+
+const objectA = {
+  a: 1,
+  b: 2,
+  c: 3,
+};
+
+const objectB = {
+  a: 20,
+  d: 40,
+};
+
+assert.equal({
+  ...objectA,
+  ...objectB
+}, { a: 20, b: 2, c: 3, d: 40 });