Typing Octane: Using TypeScript with Ember 3.15+

Typing Octane Using TypeScript with Ember 3.15+ James C. Davis Front-end Lead, Center for Open Science @jamescdavis @jamscdavis @jamescdavis

Yarn 2 2 2 2 2 2 2 @jamescdavis 2 2 2 @jamscdavis @jamescdavis

Volta! $ volta pin yarn@1 https://volta.sh @jamescdavis @jamscdavis @jamescdavis

Install ember-cli-typescript $ ember install ember-cli-typescript @jamescdavis @jamscdavis @jamescdavis

Throw out the blueprints! $ yarn remove ember-cli-typescript-blueprints $ npm uninstall ember-cli-typescript-blueprints @jamescdavis @jamscdavis @jamescdavis

But how do I get TypeScript things? @jamescdavis @jamscdavis @jamescdavis

But how do I get TypeScript things? $ cd app/components/ $ mv my-comp.js my-comp.ts @jamescdavis @jamscdavis @jamescdavis

Install @glimmer/tracking $ yarn install @glimmer/tracking @jamescdavis @jamscdavis @jamescdavis

Components @jamescdavis @jamscdavis @jamescdavis

Components Type ‘“hello!”’ is not assignable to type ‘number’. @jamescdavis @jamscdavis @jamescdavis

Component args @jamescdavis @jamscdavis @jamescdavis

Component args Property ‘foo’ does not exist on type ‘{}’. @jamescdavis @jamscdavis @jamescdavis

Typing args @jamescdavis @jamscdavis @jamescdavis

Typing args Property ‘args’ has no initializer and is not definitely assigned in the constructor. @jamescdavis @jamscdavis @jamescdavis

Typing args @jamescdavis @jamscdavis @jamescdavis

Constructor args @jamescdavis @jamscdavis @jamescdavis

There’s a better way! @jamescdavis @jamscdavis @jamescdavis

Octane guides are coming! https://ember-cli-typescript.com/versions/octane-docs/ @jamescdavis @jamscdavis @jamescdavis

Thank you! @jamescdavis @jamscdavis @jamescdavis