@wordpress/blocks/build-module/api/raw-handling/latex-to-math.js

Block API for WordPress.

// packages/blocks/src/api/raw-handling/latex-to-math.js
function isLatexMathMode(text) {
  const lettersRegex = /[\p{L}\s]+/gu;
  let match;
  while (match = lettersRegex.exec(text)) {
    if (text[match.index - 1] === "{") {
      continue;
    }
    let sequence = match[0];
    if (text[match.index - 1] === "\\") {
      sequence = sequence.replace(/^[a-zA-Z]+/, "");
    }
    if (sequence.length < 6) {
      continue;
    }
    return false;
  }
  if (/\\[a-zA-Z]+\s*\{/g.test(text)) {
    return true;
  }
  const softClues = [
    (t) => t.includes("^") && !t.startsWith("^"),
    (t) => ["=", "+", "-", "/", "*"].some(
      (operator) => t.includes(operator)
    ),
    (t) => /\\[a-zA-Z]+/g.test(t)
  ];
  if (softClues.filter((clue) => clue(text)).length >= 2) {
    return true;
  }
  return false;
}
export {
  isLatexMathMode as default
};
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