// @module: commonjs

// @includebuiltfile: typescript.d.ts

// @stripInternal:true

/*

* Note: This test is a public API sample. The sample sources can be found

at: https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API#a-simple-transform-function

* Please log a "breaking change" issue for any API breaking change affecting this issue

*/

declare var process: any;

declare var console: any;

declare var fs: any;

declare var path: any;

declare var os: any;

import ts = require("typescript");

function transform(contents: string, compilerOptions: ts.CompilerOptions = {}) {

// Sources

var files = {

"file.ts": contents,

"lib.d.ts": fs.readFileSync(ts.getDefaultLibFilePath(compilerOptions)).toString()

};

// Generated outputs

var outputs = [];

// Create a compilerHost object to allow the compiler to read and write files

var compilerHost = {

getSourceFile: (fileName, target) => {

return files[fileName] !== undefined ?

ts.createSourceFile(fileName, files[fileName], target) : undefined;

},

writeFile: (name, text, writeByteOrderMark) => {

outputs.push({ name: name, text: text, writeByteOrderMark: writeByteOrderMark });

},

getDefaultLibFileName: () => "lib.d.ts",

useCaseSensitiveFileNames: () => false,

getCanonicalFileName: (fileName) => fileName,

getCurrentDirectory: () => "",

getNewLine: () => "\n"

};

// Create a program from inputs

var program = ts.createProgram(["file.ts"], compilerOptions, compilerHost);

// Query for early errors

var errors = ts.getPreEmitDiagnostics(program);

var emitResult = program.emit();

errors = errors.concat(emitResult.diagnostics);

return {

outputs: outputs,

errors: errors.map(function (e) {

return e.file.fileName + "(" + e.file.getLineAndCharacterFromPosition(e.start).line + "): "

+ ts.flattenDiagnosticMessageText(e.messageText, os.EOL);

})

};

}

// Calling our transform function using a simple TypeScript variable declarations,

// and loading the default library like:

var source = "var x: number = 'string'";

var result = transform(source);

console.log(JSON.stringify(result));