Method parseNumber

src/common/json5.ts:208–237

()

  }

  private parseNumber(): number {
    const start = this.index;

    // Check explicitly for signed Infinity
    if (this.text.startsWith('-Infinity', this.index)) {
      this.index += '-Infinity'.length;
      return -Infinity;
    }
    if (this.text.startsWith('+Infinity', this.index)) {
      this.index += '+Infinity'.length;
      return Infinity;
    }
    if (this.text.startsWith('Infinity', this.index)) {
      this.index += 'Infinity'.length;
      return Infinity;
    }

    // Otherwise, collect a typical number literal.
    while (!this.isAtEnd() && /[0-9+\-_.eE]/.test(this.currentChar())) {
      this.index++;
    }
    const token = this.text.slice(start, this.index);
    // Remove underscores (allowed in JSON5)
    const normalized = token.replace(/_/g, '');
    const num = Number(normalized);
    if (isNaN(num)) {
      throw this.error(`Invalid number: ${token}`);
    }
    return num;
  }

  private parseIdentifier(): any {
    const start = this.index;