Function escapeString

packages/convert/src/deepnote-to-marimo.ts:270–289

* Escapes a string for use in a Python double-quoted string literal. * Handles backslashes, quotes, control characters, and non-printable characters.

(str: string)

 * Handles backslashes, quotes, control characters, and non-printable characters.
 */
function escapeString(str: string): string {
  return (
    str
      .replace(/\\/g, '\\\\') // Backslash must be first
      .replace(/"/g, '\\"') // Double quotes
      .replace(/\n/g, '\\n') // Newline
      .replace(/\r/g, '\\r') // Carriage return
      .replace(/\t/g, '\\t') // Tab
      // biome-ignore lint/suspicious/noControlCharactersInRegex: intentionally matching backspace character
      .replace(/[\x08]/g, '\\b') // Backspace (use hex to avoid \b word boundary)
      // biome-ignore lint/suspicious/noControlCharactersInRegex: intentionally matching form feed character
      .replace(/[\x0C]/g, '\\f') // Form feed (use hex to avoid literal control char)
      // biome-ignore lint/suspicious/noControlCharactersInRegex: intentionally matching control characters for escaping
      .replace(/[\x00-\x07\x0B\x0E-\x1F\x7F-\x9F]/g, char => {
        // Escape other control characters as \uXXXX
        const code = char.charCodeAt(0)
        return `\\u${code.toString(16).padStart(4, '0')}`
      })
  )
}

/**
 * Escapes content for use in a Python raw triple-quoted string (r""").