Function concat

packages/reactivity/src/arrayInstrumentations.ts:49–53

(...args: unknown[])

  },

  concat(...args: unknown[]) {
    return reactiveReadArray(this).concat(
      ...args.map(x => (isArray(x) ? reactiveReadArray(x) : x)),
    )
  },

  entries() {
    return iterator(this, 'entries', (value: [number, unknown]) => {