function util.isNumberimport { util } from "https://dotland.deno.dev/x/polkadot@0.2.45/mod.ts"; const { isNumber } = util; isNumber(value: unknown): value is numberExamples import { isNumber } from 'https://deno.land/x/polkadot@0.2.45/util/mod.ts'; console.log('isNumber', isNumber(1234)); // => true Parametersvalue: unknownReturnsvalue is number