broccoli-node-api

import type { TransformNodeInfo, FeatureSet, BuildChangeObject, Node } from 'broccoli-node-api'; import * as fs from 'node:fs/promises'; import * as path from 'node:path'; interface MyTransformNodeOptions { annotation?: string; } class MyExampleTransformNode { private annotation: string | null | undefined; private inputNodes: Node[]; constructor(inputNodes: Node[], options?: MyTransformNodeOptions) { this.inputNodes = inputNodes; this.annotation = options?.annotation; } __broccoliGetInfo__(builderFeatures: FeatureSet): TransformNodeInfo { const nodeInfo: TransformNodeInfo = { nodeType: 'transform', name: 'MyExampleTransform', annotation: this.annotation, instantiationStack: new Error().stack!, inputNodes: this.inputNodes, persistentOutput: false, needsCache: true, volatile: false, trackInputChanges: false, setup(features: FeatureSet, options: { inputPaths: string[]; outputPath: string; cachePath: string }): void { // Perform any setup necessary, e.g., create directories // console.log('Setup called with:', options); }, getCallbackObject(): CallbackObject { return { async build(buildChangeObject?: BuildChangeObject): Promise<void> { const { inputPaths, outputPath } = (this as any).__$broccoliGetInfo__()._options; const [inputPath] = inputPaths; // Example: Copy files from input to output const files = await fs.readdir(inputPath); for (const file of files) { const source = path.join(inputPath, file); const destination = path.join(outputPath, file); await fs.copyFile(source, destination); } console.log(`Copied ${files.length} files from ${inputPath} to ${outputPath}`); }, }; }, }; return nodeInfo; } } // Example usage (typically in a Brocfile.ts): // Assume 'myInputTree' is another Broccoli Node or a string path // const myInputTree = 'app'; // const myTransform = new MyExampleTransformNode([myInputTree], { annotation: 'My Custom Transform' }); // export default myTransform; console.log('MyExampleTransformNode class defined, ready for Broccoli usage.');