prettier-sanctuary/app/ignore-line.js

const { split, flatten } = require("./utils");

const ignoredLine = (line) => ({
  line,
  ignored: true,
});

const notIgnoredLine = (line) => ({
  line,
  ignored: false,
});

const addIgnoreLines = (lines) => {
  const result = [];
  let i = 0;
  while (i < lines.length) {
    if (/^\/\/ prettier-sanctuary-ignore$/.test(lines[i])) {
      result.push(ignoredLine(lines[i]));
      do {
        i++;
        result.push(ignoredLine(lines[i]));
      } while (!/^.*;$/.test(lines[i]));
    } else if (/^ *\/\*$/.test(lines[i])) {
      result.push(ignoredLine(lines[i]));
      do {
        i++;
        result.push(ignoredLine(lines[i]));
      } while (!/^.*\*\/$/.test(lines[i]));
    } else if (/^ *\/\/.*$/.test(lines[i])) {
      result.push(ignoredLine(lines[i]));
    } else {
      result.push(notIgnoredLine(lines[i]));
    }
    i++;
  }
  return result;
};

const joinNotIgnored = (lines) => {
  const result = [];
  let i = 0;
  while (i < lines.length) {
    if (lines[i]?.ignored === false) {
      let str = lines[i].line;
      i++;
      while (lines[i]?.ignored === false) {
        str += "\n" + lines[i].line;
        i++;
      }
      result.push(notIgnoredLine(str));
    } else {
      result.push(lines[i]);
      i++;
    }
  }
  return result;
};

const mapOnLines = (fn) => (lines) => {
  const result = [];
  for (const line of lines) {
    if (line.ignored === false) {
      const subRes = fn(line.line);
      if (typeof subRes === "string") {
        result.push(notIgnoredLine(subRes));
      } else if (Array.isArray(subRes)) {
        result.push(subRes.map(notIgnoredLine));
      }
    } else {
      result.push(line);
    }
  }
  return flatten(result);
};

const splitOnEoLNotIgnored = (lines) => mapOnLines(split("\n"))(lines);

module.exports = {
  notIgnoredLine,
  addIgnoreLines,
  joinNotIgnored,
  splitOnEoLNotIgnored,
  mapOnLines,
};