it-know-how/typescript/bits/12-python-to-typescript-mini-map.md

Python to TypeScript Mini Map

Quick syntax map for common constructs.

Function typing

def fn(x: int) -> str:
		return str(x)

function fn(x: number): string {
	return String(x);
}

Lambda / Arrow

lambda x: x + 1

(x) => x + 1

Fallback for missing values

value = x if x is not None else 'fallback'

const value = x ?? 'fallback';

String interpolation

f"{year}-{month}-{day}"

`${year}-${month}-${day}`

Searching first match

next((p for p in parts if p['type'] == 'year'), None)

parts.find((p) => p.type === 'year')