Function replacer

test/MagicString.test.ts:2094–2097

(match: string, p1: string, p2: string, p3: string, offset: number, string: string, groups: Record<string, string> | undefined)

    it('replace function offset', () => {
      // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#specifying_a_function_as_a_parameter
      function replacer(match: string, p1: string, p2: string, p3: string, offset: number, string: string, groups: Record<string, string> | undefined) {
        // p1 is nondigits, p2 digits, and p3 non-alphanumerics
        return [match, p1, p2, p3, offset, string, groups].join(' - ')
      }
      const code = 'abc12345#$*%'
      const regex = /(\D*)(\d*)(\W*)/
      assert.strictEqual(