ts-simple-ast

ts-simple-ast ============= TypeScript Compiler API wrapper. Provides a simple way to navigate and manipulate TypeScript and JavaScript code.

NOTICE - LIBRARY RENAMED!

ts-simple-ast has been renamed to ts-morph.

Library Development - Progress Update (06 January 2019)

View information on breaking changes in breaking-changes.md. This library is still under early active development. Most common code manipulation/generation use cases are implemented, but there's still a lot of work to do. Please open an issue if you find a feature missing or bug that isn't in the issue tracker.

Report

View a generated report on what nodes have been wrapped in the wrapped-nodes.md file.

Documentation

Work in progress: https://dsherret.github.io/ts-simple-ast/

Getting Started

1. Installing

1. Instantiating

1. Adding source files

1. Getting source files

1. Navigating

1. Manipulating

Example

```ts import { Project } from "ts-simple-ast"; // initialize const project = new Project({

// Optionally specify compiler options, tsconfig.json, virtual file system, and more here.

// If you initialize with a tsconfig.json, then it will automatically populate the project

// with the associated source files.

// Read more: https://dsherret.github.io/ts-simple-ast/setup/

}); // add source files project.addExistingSourceFiles("src//.ts"); const myClassFile = project.createSourceFile("src/MyClass.ts", "export class MyClass {}"); const myEnumFile = project.createSourceFile("src/MyEnum.ts", {

enums: [{

name: "MyEnum",

isExported: true,

members: [{ name: "member" }]

}]

}); // get information from ast const myClass = myClassFile.getClassOrThrow("MyClass"); myClass.getName(); // returns: "MyClass" myClass.hasExportKeyword(); // returns: true myClass.isDefaultExport(); // returns: false // manipulate ast const myInterface = myClassFile.addInterface({

name: "IMyInterface",

isExported: true,

properties: [{

name: "myProp",

type: "number"

}]

}); myClass.rename("NewName"); myClass.addImplements(myInterface.getName()); myClass.addProperty({

name: "myProp",

initializer: "5"

}); project.getSourceFileOrThrow("src/ExistingFile.ts").delete(); // asynchronously save all the changes above project.save(); // get underlying compiler node from the typescript AST from any node const compilerNode = myClassFile.compilerNode; ``` Or navigate existing compiler nodes created with the TypeScript compiler (the ts named export is the TypeScript compiler): ```ts ignore-error: 1109 import { createWrappedNode, ClassDeclaration, ts } from "ts-simple-ast"; // some code that creates a class declaration using the ts object const classNode: ts.ClassDeclaration = ...; // create and use a wrapped node const classDec = createWrappedNode(classNode) as ClassDeclaration; const firstProperty = classDec.getProperties()0; // ... do more stuff here ... ```

Resources

• AST Viewers