ts-simple-ast

Adding Source Files

You will need to populate the ast object with source files.

By a tsconfig.json

Source files will be added when instantiating with a tsConfigFilePath:

const ast = new Ast({
    tsConfigFilePath: "path/to/tsconfig.json"
});

…and this can be disabled by setting addFilesFromTsConfig: false.

Alternatively, populate the ast object by calling addSourceFilesFromTsConfig:

ast.addSourceFilesFromTsConfig("path/to/tsconfig.json");

By file globs or file paths

Specify as many file globs or file paths as you wish:

ast.addExistingSourceFiles("folder/**/*{.d.ts,.ts}");
ast.addExistingSourceFiles(["folder/file.ts", "folder/otherFile.ts"]);
ast.addExistingSourceFiles(["**/*.ts", "!**/*.d.ts"]);

By file path

const sourceFile = ast.addExistingSourceFile("path/to/file.ts"); // or addSourceFileIfExists

By structure

Create source files based on an object that looks like the AST of a source file:

const sourceFile = ast.createSourceFile("path/to/myStructureFile.ts", {
    enums: [{
        name: "MyEnum",
        members: [{
            name: "member"
        }]
    }],
    classes: [{
        name: "MyClass",
        // etc...
    }]
    // etc...
});

The above would create a source file with the following text:

enum MyEnum {
    member
}

class MyClass {
}

Note: The file will not be created and saved to the file system until calling .save() on the source file.

By string

const fileText = "enum MyEnum {\n}\n";
const sourceFile = ast.createSourceFile("path/to/myNewFile.ts", fileText);

Note: The file will not be created and saved to the file system until calling .save() on the source file.

Note

Adding source files to the AST from a structure or text will act like any other source file, but they will not be saved to the disk unless you ask it to be.

// save it to the disk if you wish:
sourceFile.save(); // or saveSync();