INNER CODE UNIT · JavaScript

_optionalChain

MorpheApp/morphe-patches · patches/src/main/resources/spoof/raw/yt.solver.core.js:180

  function _optionalChain(ops) {
    let lastAccessLHS = undefined;
    let value = ops[0];
    let i = 1;
    while (i < ops.length) {
      const op = ops[i];
      const fn = ops[i + 1];
      i += 2;
      if ((op === 'optionalAccess' || op === 'optionalCall') && value == null) {
        return undefined;
      }
      if (op === 'access' || op === 'optionalAccess') {
        lastAccessLHS = value;
        value = fn(value);
      } else if (op === 'call' || op === 'optionalCall') {
        value = fn((...args) => value.call(lastAccessLHS, ...args));
        lastAccessLHS = undefined;
      }

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