MichalS michaeljscript

💻

Coding React Apps

michaeljscript / typeguards.person-extended.ts

Last active April 3, 2019 14:02

michaeljscript / typeguards.is-person-v1.ts

Last active April 3, 2019 14:01

	function isPerson(value: unknown): value is Person {
	return typeof value === 'object' && value &&
	value.hasOwnProperty('name') &&
	value.hasOwnProperty('age') &&
	typeof value.name === 'string' &&
	typeof value.age === 'number';
	}

michaeljscript / typeguards.person-basic.ts

Last active April 3, 2019 14:00

michaeljscript / typeguards.has-own-property.ts

Last active April 13, 2019 14:25

	declare global {
	interface Object {
	hasOwnProperty<K extends string>(key: K): this is Record<K, unknown>;
	}
	}