@beenotung/tslib/assert.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.assertNever = assertNever;
exports.assertNoUndefined = assertNoUndefined;
function assertNever(x) {
    console.error('assert never, but got:', x);
    throw new Error('assert never, but got: ' + x);
}
function assertNoUndefined(o, visited = new Set()) {
    if (visited.has(o)) {
        return;
    }
    visited.add(o);
    if (Array.isArray(o)) {
        o.forEach(x => assertNoUndefined(x, visited));
        return;
    }
    if (o instanceof Map) {
        Array.from(o.values()).forEach(x => assertNoUndefined(x, visited));
        return;
    }
    if (typeof o === 'object') {
        Object.keys(o).forEach(x => assertNoUndefined(o[x], visited));
        return;
    }
    // e.g. number, string
    if (o === undefined) {
        throw new Error('AssertionError: undefined value');
    }
}