Method render

packages/color-diff-napi/src/index.ts:951–974

(themeName: string, width: number, dim: boolean)

  }

  render(themeName: string, width: number, dim: boolean): string[] | null {
    const mode = detectColorMode(themeName)
    const theme = buildTheme(themeName, mode)
    const lines = this.code.split('\n')
    // Rust .lines() drops trailing empty line from trailing \n
    if (lines.length > 0 && lines[lines.length - 1] === '') lines.pop()
    const firstLine = lines[0] ?? null
    const lang = detectLanguage(this.filePath, firstLine)
    const hlState = { lang, stack: null }

    const maxDigits = String(lines.length).length
    const effectiveWidth = Math.max(1, width - maxDigits - 2)

    const out: string[] = []
    for (let i = 0; i < lines.length; i++) {
      const tokens = highlightLine(hlState, lines[i]!, theme)
      const h: Highlight = { marker: null, lineNumber: i + 1, lines: [tokens] }
      removeNewlines(h)
      wrapText(h, effectiveWidth, theme)
      addLineNumber(h, theme, maxDigits, dim)
      out.push(...intoLines(h, dim, true, mode))
    }
    return out
  }
}

export function getSyntaxTheme(themeName: string): SyntaxTheme {