Ep.jumpIfNot = function()

in packages/transform/src/emit.js [185:207]

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

Ep.jumpIfNot = function(test, toLoc) {
  const t = util.getTypes();

  t.assertExpression(test);
  t.assertLiteral(toLoc);

  let negatedTest;
  if (t.isUnaryExpression(test) &&
      test.operator === "!") {
    // Avoid double negation.
    negatedTest = test.argument;
  } else {
    negatedTest = t.unaryExpression("!", test);
  }

  this.emit(t.ifStatement(
    negatedTest,
    t.blockStatement([
      this.assign(this.contextProperty("next"), toLoc),
      t.breakStatement()
    ])
  ));
};