Proposed Task: Migrate from Javascript to Typescript

[s0mya]

Typescript can help detect errors earlier in the workflow and results in easier to understand code.

E.g. Let's look at Props for example
Javascript: No requirement to declare the type of Props. Any property can be passed. Invalid prop usage is not detected until runtime.
const JSComponent = (props) => {
return (

{props.x} {props.y} {props.anotherInvalidProp}

); }

Typescript: Exact props type must be specified. Errors are highlighted at compile time and it’s much easier to identify the component interface.
interface Props {
x: number,
y: number
}

const TSComponent = (props: Props) => {
return (

{props.x}
{props.y}
{props.anotherInvalidProp}

);
}

Fortunately it’s possible to migrate at your own pace: https://www.typescriptlang.org/docs/handbook/migrating-from-javascript.html

[s0mya]

@TristanThrush @douwekiela Can you review you agree with this task?