decorator-this.js - mozsearch

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// |jit-test| skip-if: !getBuildConfiguration("decorators")

load(libdir + "asserts.js");

let globalDecCalled = false;

function globalDec(value, context) {

  globalDecCalled = true;

  assertEq(this, globalThis);

// Forward declare c to be able to check it inside of C when running decorators.

let c;

let classDecCalled = false;

class C {

  classDec(value, context) {

    classDecCalled = true;

    // At this point, `this` is an instance of C

    assertEq(c, this);

    return function(initialValue) {

      // At this point, `this` is an instance of D

      assertEq(this instanceof D, true);

      return initialValue;

c = new C();

class D {

  @globalDec x1;

  @c.classDec x2;

let d = new D();

assertEq(globalDecCalled, true);

assertEq(classDecCalled, true);