postaction()

in web/jslint/src/main/resources/data/jslint-2020-03-28.js [3922:3959]

• 32 lines of code
• 19 McCabe index (conditional complexity)

postaction("assignment", function (thing) {
  // Assignment using = sets the init property of a variable. No other assignment
  // operator can do this. A = token keeps that variable (or array of variables
  // in case of destructuring) in its name property.
  var lvalue = thing.expression[0];

  if (thing.id === "=") {
    if (thing.names !== undefined) {
      if (Array.isArray(thing.names)) {
        thing.names.forEach(init_variable);
      } else {
        init_variable(thing.names);
      }
    } else {
      if (lvalue.id === "[" || lvalue.id === "{") {
        lvalue.expression.forEach(function (thing) {
          if (thing.variable) {
            thing.variable.init = true;
          }
        });
      } else if (lvalue.id === "." && thing.expression[1].id === "undefined") {
        warn("expected_a_b", lvalue.expression, "delete", "undefined");
      }
    }
  } else {
    if (lvalue.arity === "variable") {
      if (!lvalue.variable || lvalue.variable.writable !== true) {
        warn("bad_assignment_a", lvalue);
      }
    }

    var right = syntax[thing.expression[1].id];

    if (right !== undefined && (right.id === "function" || right.id === "=>" || right.constant && right.id !== "(number)" && (right.id !== "(string)" || thing.id !== "+="))) {
      warn("unexpected_a", thing.expression[1]);
    }
  }
});