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ts-morph

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ts-morph

TypeScript compiler wrapper for static analysis and code manipulation.

  • 24.0.0
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  • npm
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3.2M
decreased by-1.1%
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1
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What is ts-morph?

The ts-morph package is a TypeScript compiler API wrapper that provides a simpler way to programmatically navigate, analyze, and manipulate TypeScript and JavaScript code. It abstracts the complexity of the underlying TypeScript compiler API, making it more accessible and easier to use for tasks such as code analysis, transformation, and generation.

What are ts-morph's main functionalities?

Navigating the AST

This feature allows users to navigate the Abstract Syntax Tree (AST) of a TypeScript file. The code sample demonstrates how to load a TypeScript file into a project, retrieve all classes from it, and log their names.

const project = new Project();
const sourceFile = project.addSourceFileAtPath('example.ts');
const classes = sourceFile.getClasses();
console.log(classes.map(c => c.getName()));

Modifying code

This feature enables users to programmatically modify TypeScript code. The code sample shows how to create a new TypeScript file, change the initializer of a variable declaration, and then log the updated source code.

const project = new Project();
const sourceFile = project.createSourceFile('example.ts', 'const a = 1;');
sourceFile.getVariableDeclaration('a').setInitializer('2');
console.log(sourceFile.getText());

Code generation

This feature is used for generating new code, such as classes, interfaces, or functions. The code sample illustrates how to create a new TypeScript file and add a new class to it.

const project = new Project();
const sourceFile = project.createSourceFile('example.ts');
sourceFile.addClass({ name: 'NewClass' });
console.log(sourceFile.getText());

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Package last updated on 06 Oct 2024

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