CODEWITHSUNDEEP
typescriptecmascript-6
BaldEagle
BaldEagle

Reputation: 1018

TypeScript: Good d.ts file for ES2015/ES6?

The goal: Find a d.ts file that'll teach TypeScript the changes in ES2015/ES6.

TypeScript 1.5 ES6 modules & .d.ts files from DefinitelyTyped seem incompatible (Jul 2015) references using es6.lib.d.ts.

error TS2339: Property 'endsWith' does not exist on type 'string' (Dec 2015) points to https://github.com/Microsoft/TypeScript/blob/master/lib/lib.es6.d.ts.

Note the difference between the file titles!

I looked on typings and found neither es6.lib.d.ts nor lib.es6.d.ts.

I copied the lib.es6.d.ts cited above and cited it in my programs (/// <reference path="./typings/lib.es6.d.ts" />); the compiler tilts when processing that file. Line 132 there is

readonly prototype: Object;

Line 132 is the first occurrence of readonly in the file. The compiler points at readonly and reports

error TS1131: Property or signature expected.

Anyone know how to teach ES6 to TypeScript? Or to work around teaching it? (I'd love to use ES6 features, of course!) Thanks in advance!

Upvotes: 0

Views: 1318

Answers (2)

Zen
Zen

Reputation: 5490

Just set ES6 as you target and you have taught ES6 to typescript. 

// tsconfig.json
{
    "compilerOptions": {
        "target": "ES6",
        "module": "commonjs",
        "sourceMap": true,
        "noImplicitAny": true
    }
}

Upvotes: 0

basarat
basarat

Reputation: 275819

Anyone know how to teach ES6 to TypeScript

With the latest compiler (and you really should use that https://basarat.gitbooks.io/typescript/content/docs/getting-started.html#nightly-typescript) you can use the --lib es6 option.

More

More on lib option : https://github.com/Microsoft/TypeScript/issues/6974

(PS: its supported in alm https://github.com/alm-tools/alm/)

Upvotes: 2

Related Questions