Function assert

lib/assert.ts:112–116

(c: unknown, message?: string, ...extra_info: any[])

// Using `unknown` instead of generic implementation due to:
// https://github.com/microsoft/TypeScript/issues/60130
export function assert(c: unknown, message?: string, ...extra_info: any[]): asserts c {
    if (!c) {
        fail('Assertion failed', message, extra_info);
    }
}

export function unwrap<T>(x: T | undefined | null, message?: string, ...extra_info: any[]): T {
    if (x === undefined || x === null) {