Method char

packages/icu-messageformat-parser/parser.ts:1138–1148

* Return the code point at the current position of the parser. * Throws if the index is out of bound.

()

   * Throws if the index is out of bound.
   */
  private char(): number {
    const offset = this.position.offset
    if (offset >= this.message.length) {
      throw Error('out of bound')
    }
    const code = this.message.codePointAt(offset)
    if (code === undefined) {
      throw Error(`Offset ${offset} is at invalid UTF-16 code unit boundary`)
    }
    return code
  }

  private error(
    kind: ErrorKind,