Function parseUnary

scripts/babel/transform-test-gate-pragma.js:191–201

()

    }

    function parseUnary() {
      const token = tokens[i];
      if (token !== undefined) {
        if (token.type === '!') {
          i++;
          const argument = parseUnary();
          return t.unaryExpression('!', argument);
        }
      }
      return parsePrimary();
    }

    function parsePrimary() {
      const token = tokens[i];