maslade/example-sad-types.ts

## example-sad-types.ts
const list: Array<number | string> = [1, 'two', 3, 'four'];

// the implicit type of both of these consts is Array<string | number> -- not helpful!
const numbers = list.filter(thing => typeof thing === 'number');
const strings = list.filter(thing => typeof thing === 'string');
	const list: Array<number \| string> = [1, 'two', 3, 'four'];

	// the implicit type of both of these consts is Array<string \| number> -- not helpful!
	const numbers = list.filter(thing => typeof thing === 'number');
	const strings = list.filter(thing => typeof thing === 'string');