Created
August 21, 2025 20:48
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| import { Project, SyntaxKind } from "ts-morph"; | |
| // Step 1: create a ts-morph project | |
| const project = new Project({ | |
| useInMemoryFileSystem: true, | |
| compilerOptions: { strict: true } | |
| }); | |
| // Step 2: insert your template source | |
| const source = project.createSourceFile("temp.ts", ` | |
| export function MY_FUNC(ARG1, ARG2) { | |
| return { ...ARG1, b: ARG2 }; | |
| } | |
| `); | |
| // Step 3: look up the function declaration | |
| const func = source.getFunctionOrThrow("MY_FUNC"); | |
| // === Postprocess === | |
| // Rename function name | |
| func.rename("abc"); | |
| // Rename parameters | |
| const [arg1, arg2] = func.getParameters(); | |
| arg1.rename("method"); | |
| arg2.rename("count"); | |
| // Add type annotations | |
| arg1.setType("string"); | |
| arg2.setType("number"); | |
| // Step 4: optionally inspect inferred return type | |
| const signature = func.getSignature(); | |
| console.log("Return type:", signature.getReturnType().getText()); | |
| // Step 5: print the transformed source | |
| console.log(source.getFullText()); |
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