Function dedent

core/util/index.ts:139–191

(strings: TemplateStringsArray, ...values: any[])

export type TODO = any;

export function dedent(strings: TemplateStringsArray, ...values: any[]) {
  let raw = "";
  for (let i = 0; i < strings.length; i++) {
    raw += strings[i];

    // Handle the value if it exists
    if (i < values.length) {
      let value = String(values[i]);
      // If the value contains newlines, we need to adjust the indentation
      if (value.includes("\n")) {
        // Find the indentation level of the last line in strings[i]
        let lines = strings[i].split("\n");
        let lastLine = lines[lines.length - 1];
        let match = lastLine.match(/(^|\n)([^\S\n]*)$/);
        let indent = match ? match[2] : "";
        // Add indentation to all lines except the first line of value
        let valueLines = value.split("\n");
        valueLines = valueLines.map((line, index) =>
          index === 0 ? line : indent + line,
        );
        value = valueLines.join("\n");
      }
      raw += value;
    }
  }

  // Now dedent the full string
  let result = raw.replace(/^\n/, "").replace(/\n\s*$/, "");
  let lines = result.split("\n");

  // Remove leading/trailing blank lines
  while (lines.length > 0 && lines[0].trim() === "") {
    lines.shift();
  }
  while (lines.length > 0 && lines[lines.length - 1].trim() === "") {
    lines.pop();
  }

  // Calculate minimum indentation (excluding empty lines)
  let minIndent = lines.reduce((min: any, line: any) => {
    if (line.trim() === "") return min;
    let match = line.match(/^(\s*)/);
    let indent = match ? match[1].length : 0;
    return min === null ? indent : Math.min(min, indent);
  }, null);

  if (minIndent !== null && minIndent > 0) {
    // Remove the minimum indentation from each line
    lines = lines.map((line) => line.slice(minIndent));
  }

  return lines.join("\n");
}

/**
 * Removes code blocks from a message.