Fixed jsdocs for throwUnless and throwUnlessAsync

These are likely to be methods or other things that aren't meaningful in
Jasmine's output.

.circleci/config.yml

@@ -80,7 +80,7 @@ jobs:
             # cleanly if we kill it from a different step than it started in.
 
             export PATH=$PATH:$HOME/workspace/bin
-            export SAUCE_TUNNEL_IDENTIFIER=$CIRCLE_BUILD_NUM
+            export SAUCE_TUNNEL_IDENTIFIER=$CIRCLE_WORKFLOW_JOB_ID
             scripts/start-sauce-connect sauce-pidfile
             set +o errexit
             scripts/run-all-browsers

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,6 +1,6 @@
 name: Bug Report
 description: I think I've found a bug in Jasmine
-labels: ["unconfirmed bug"]
+labels: ["bug report"]
 body:
   - type: markdown
     attributes:

lib/jasmine-core.js

@@ -6,11 +6,11 @@
 const jasmineRequire = require('./jasmine-core/jasmine.js');
 module.exports = jasmineRequire;
 
-const bootOnce = (function() {
+const boot = (function() {
   let jasmine, jasmineInterface;
 
-  return function bootWithoutGlobals() {
-    if (!jasmineInterface) {
+  return function bootWithoutGlobals(reinitialize) {
+    if (!jasmineInterface || reinitialize === true) {
       jasmine = jasmineRequire.core(jasmineRequire);
       const env = jasmine.getEnv({ suppressLoadErrors: true });
       jasmineInterface = jasmineRequire.interface(jasmine, env);
@@ -22,12 +22,14 @@ const bootOnce = (function() {
 
 /**
  * Boots a copy of Jasmine and returns an object as described in {@link jasmine}.
- * If boot is called multiple times, the same object is returned every time.
+ * If boot is called multiple times, the same object is returned every time
+ * unless true is passed.
+ * @param {boolean} [reinitialize=false] Whether to create a new copy of Jasmine if one already exists
  * @type {function}
  * @return {jasmine}
  */
-module.exports.boot = function() {
-  const {jasmine, jasmineInterface} = bootOnce();
+module.exports.boot = function(reinitialize) {
+  const {jasmine, jasmineInterface} = boot(reinitialize);
 
   for (const k in jasmineInterface) {
     global[k] = jasmineInterface[k];
@@ -39,13 +41,14 @@ module.exports.boot = function() {
 /**
  * Boots a copy of Jasmine and returns an object containing the properties
  * that would normally be added to the global object. If noGlobals is called
- * multiple times, the same object is returned every time.
+ * multiple times, the same object is returned every time unless true is passed.
  *
+ * @param {boolean} [reinitialize=false] Whether to create a new copy of Jasmine if one already exists
  * @example
  * const {describe, beforeEach, it, expect, jasmine} = require('jasmine-core').noGlobals();
  */
-module.exports.noGlobals = function() {
-  const {jasmineInterface} = bootOnce();
+module.exports.noGlobals = function(reinitialize) {
+  const {jasmineInterface} = boot(reinitialize);
   return jasmineInterface;
 };
 

lib/jasmine-core/jasmine.js

@@ -809,14 +809,6 @@ getJasmineRequireObj().Spec = function(j$) {
     this.result.properties[key] = value;
   };
 
-  Spec.prototype.expect = function(actual) {
-    return this.expectationFactory(actual, this);
-  };
-
-  Spec.prototype.expectAsync = function(actual) {
-    return this.asyncExpectationFactory(actual, this);
-  };
-
   Spec.prototype.execute = function(
     queueRunnerFactory,
     onComplete,
@@ -1401,6 +1393,49 @@ getJasmineRequireObj().Env = function(j$) {
       }
     };
 
+    const handleThrowUnlessFailure = function(passed, result) {
+      if (!passed) {
+        /**
+         * @interface
+         * @name ThrowUnlessFailure
+         * @extends Error
+         * @description Represents a failure of an expectation evaluated with
+         * {@link throwUnless}. Properties of this error are a subset of the
+         * properties of {@link Expectation} and have the same values.
+         * @property {String} matcherName - The name of the matcher that was executed for this expectation.
+         * @property {String} message - The failure message for the expectation.
+         * @property {Boolean} passed - Whether the expectation passed or failed.
+         * @property {Object} expected - If the expectation failed, what was the expected value.
+         * @property {Object} actual - If the expectation failed, what actual value was produced.
+         */
+        const error = new Error(result.message);
+        error.passed = result.passed;
+        error.message = result.message;
+        error.expected = result.expected;
+        error.actual = result.actual;
+        error.matcherName = result.matcherName;
+        throw error;
+      }
+    };
+
+    const throwUnlessFactory = function(actual, spec) {
+      return j$.Expectation.factory({
+        matchersUtil: runableResources.makeMatchersUtil(),
+        customMatchers: runableResources.customMatchers(),
+        actual: actual,
+        addExpectationResult: handleThrowUnlessFailure
+      });
+    };
+
+    const throwUnlessAsyncFactory = function(actual, spec) {
+      return j$.Expectation.asyncFactory({
+        matchersUtil: runableResources.makeMatchersUtil(),
+        customAsyncMatchers: runableResources.customAsyncMatchers(),
+        actual: actual,
+        addExpectationResult: handleThrowUnlessFailure
+      });
+    };
+
     // TODO: Unify recordLateError with recordLateExpectation? The extra
     // diagnostic info added by the latter is probably useful in most cases.
     function recordLateError(error) {
@@ -1904,23 +1939,37 @@ getJasmineRequireObj().Env = function(j$) {
     };
 
     this.expect = function(actual) {
-      if (!runner.currentRunable()) {
+      const runable = runner.currentRunable();
+
+      if (!runable) {
         throw new Error(
           "'expect' was used when there was no current spec, this could be because an asynchronous test timed out"
         );
       }
 
-      return runner.currentRunable().expect(actual);
+      return runable.expectationFactory(actual, runable);
     };
 
     this.expectAsync = function(actual) {
-      if (!runner.currentRunable()) {
+      const runable = runner.currentRunable();
+
+      if (!runable) {
         throw new Error(
           "'expectAsync' was used when there was no current spec, this could be because an asynchronous test timed out"
         );
       }
 
-      return runner.currentRunable().expectAsync(actual);
+      return runable.asyncExpectationFactory(actual, runable);
+    };
+
+    this.throwUnless = function(actual) {
+      const runable = runner.currentRunable();
+      return throwUnlessFactory(actual, runable);
+    };
+
+    this.throwUnlessAsync = function(actual) {
+      const runable = runner.currentRunable();
+      return throwUnlessAsyncFactory(actual, runable);
     };
 
     this.beforeEach = function(beforeEachFunction, timeout) {
@@ -3531,7 +3580,7 @@ getJasmineRequireObj().ExceptionFormatter = function(j$) {
         lines.unshift(stackTrace.message);
       }
 
-      if (error.cause) {
+      if (error.cause && error.cause instanceof Error) {
         const substack = this.stack_(error.cause, {
           messageHandling: 'require'
         });
@@ -3566,7 +3615,7 @@ getJasmineRequireObj().ExceptionFormatter = function(j$) {
       const result = {};
       let empty = true;
 
-      for (const prop in error) {
+      for (const prop of Object.keys(error)) {
         if (ignoredProperties.includes(prop)) {
           continue;
         }
@@ -8232,6 +8281,54 @@ getJasmineRequireObj().interface = function(jasmine, env) {
       return env.expectAsync(actual);
     },
 
+    /**
+     * Create an asynchronous expectation for a spec and throw an error if it fails.
+     *
+     * This is intended to allow Jasmine matchers to be used with tools like
+     * testing-library's `waitFor`, which expect matcher failures to throw
+     * exceptions and not trigger a spec failure if the exception is caught.
+     * It can also be used to integration-test custom matchers.
+     *
+     * If the resulting expectation fails, a {@link ThrowUnlessFailure} will be
+     * thrown. A failed expectation will not result in a spec failure unless the
+     * exception propagates back to Jasmine, either via the call stack or via
+     * the global unhandled exception/unhandled promise rejection events.
+     * @name throwUnlessAsync
+     * @since 5.1.0
+     * @function
+     * @param actual
+     * @global
+     * @param {Object} actual - Actual computed value to test expectations against.
+     * @return {matchers}
+     */
+    throwUnlessAsync: function(actual) {
+      return env.throwUnless(actual);
+    },
+
+    /**
+     * Create an expectation for a spec and throw an error if it fails.
+     *
+     * This is intended to allow Jasmine matchers to be used with tools like
+     * testing-library's `waitFor`, which expect matcher failures to throw
+     * exceptions and not trigger a spec failure if the exception is caught.
+     * It can also be used to integration-test custom matchers.
+     *
+     * If the resulting expectation fails, a {@link ThrowUnlessFailure} will be
+     * thrown. A failed expectation will not result in a spec failure unless the
+     * exception propagates back to Jasmine, either via the call stack or via
+     * the global unhandled exception/unhandled promise rejection events.
+     * @name throwUnless
+     * @since 5.1.0
+     * @function
+     * @param actual
+     * @global
+     * @param {Object} actual - Actual computed value to test expectations against.
+     * @return {matchers}
+     */
+    throwUnless: function(actual) {
+      return env.throwUnless(actual);
+    },
+
     /**
      * Mark a spec as pending, expectation results will be ignored.
      * @name pending
@@ -9755,14 +9852,6 @@ getJasmineRequireObj().Suite = function(j$) {
     this.result.properties[key] = value;
   };
 
-  Suite.prototype.expect = function(actual) {
-    return this.expectationFactory(actual, this);
-  };
-
-  Suite.prototype.expectAsync = function(actual) {
-    return this.asyncExpectationFactory(actual, this);
-  };
-
   Suite.prototype.getFullName = function() {
     const fullName = [];
     for (
@@ -10713,5 +10802,5 @@ getJasmineRequireObj().UserContext = function(j$) {
 };
 
 getJasmineRequireObj().version = function() {
-  return '5.0.0';
+  return '5.1.0';
 };

package.json

@@ -1,7 +1,7 @@
 {
   "name": "jasmine-core",
   "license": "MIT",
-  "version": "5.0.0",
+  "version": "5.1.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/jasmine/jasmine.git"
@@ -43,8 +43,8 @@
     "grunt-contrib-concat": "^2.0.0",
     "grunt-css-url-embed": "^1.11.1",
     "grunt-sass": "^3.0.2",
-    "jasmine": "5.0.0-beta.0",
-    "jasmine-browser-runner": "^1.0.0",
+    "jasmine": "^5.0.0",
+    "jasmine-browser-runner": "github:jasmine/jasmine-browser-runner",
     "jsdom": "^22.0.0",
     "load-grunt-tasks": "^5.1.0",
     "prettier": "1.17.1",
@@ -97,7 +97,8 @@
       ],
       "space-before-blocks": "error",
       "no-eval": "error",
-      "no-var": "error"
+      "no-var": "error",
+      "no-debugger": "error"
     }
   },
   "browserslist": [

release_notes/5.0.1.md

@@ -0,0 +1,25 @@
+# Jasmine Core 5.0.1 Release Notes
+
+## Changes
+
+* Optionally restore the pre-5.0 behavior of boot() always creating a new instance
+
+  This is needed by jasmine-npm (and likely other tools like it) that may
+  need to create and use multiple envs in sequence.
+
+## Supported environments
+
+jasmine-core 5.0.1 has been tested in the following environments.
+
+| Environment       | Supported versions |
+|-------------------|--------------------|
+| Node              | 18, 20             |
+| Safari            | 15-16              |
+| Chrome            | 114                |
+| Firefox           | 102, 113           |
+| Edge              | 113                |
+
+
+------
+
+_Release Notes generated with _[Anchorman](http://github.com/infews/anchorman)_

release_notes/5.1.0.md

@@ -0,0 +1,39 @@
+# Jasmine Core 5.1.0 Release Notes
+
+## Changes
+
+* Exclude inherited Error properties from stack trace
+
+* Fixed error when formatting Error object with non-Error cause property
+
+  Merges [#2013](https://github.com/jasmine/jasmine/pull/2013) from @angrycat9000.
+
+  Fixes [#2011](https://github.com/jasmine/jasmine/issues/2011).
+  
+* Added `throwUnless` and `throwUnlessAsync`
+
+  These are similar to `expect` and `expectAsync` except that they throw
+  exceptions rather than recording matcher failures as spec/suite failures.
+  They're intended to support using Jasmine matchers in [testing-library's](https://testing-library.com/)
+  `waitFor`, and also provide a way to integration-test custom matchers.
+
+  Fixes [#2003](https://github.com/jasmine/jasmine/issues/2003).
+
+  Fixes [#1980](https://github.com/jasmine/jasmine/issues/1980).
+
+## Supported environments
+
+jasmine-core 5.1.0 has been tested in the following environments.
+
+| Environment       | Supported versions |
+|-------------------|--------------------|
+| Node              | 18, 20             |
+| Safari            | 15-16              |
+| Chrome            | 114                |
+| Firefox           | 102, 113           |
+| Edge              | 113                |
+
+
+------
+
+_Release Notes generated with _[Anchorman](http://github.com/infews/anchorman)_

spec/core/ExceptionFormatterSpec.js

@@ -197,7 +197,7 @@ describe('ExceptionFormatter', function() {
       expect(new jasmineUnderTest.ExceptionFormatter().stack()).toBeNull();
     });
 
-    it('includes error properties in stack', function() {
+    it("includes the error's own properties in stack", function() {
       const error = new Error('an error');
       error.someProperty = 'hello there';
 
@@ -206,6 +206,19 @@ describe('ExceptionFormatter', function() {
       expect(result).toMatch(/error properties:.*someProperty.*hello there/);
     });
 
+    it('does not include inherited error properties', function() {
+      function CustomError(msg) {
+        Error.call(this, msg);
+      }
+
+      CustomError.prototype = new Error();
+      CustomError.prototype.anInheritedProp = 'something';
+      const error = new CustomError('nope');
+
+      const result = new jasmineUnderTest.ExceptionFormatter().stack(error);
+      expect(result).not.toContain('anInheritedProp');
+    });
+
     describe('When omitMessage is true', function() {
       it('filters the message from V8-style stack traces', function() {
         const error = {
@@ -291,6 +304,26 @@ describe('ExceptionFormatter', function() {
           .withContext('first root cause stack frame')
           .toContain('ExceptionFormatterSpec.js');
       });
+
+      it('does not throw if cause is a non Error', function() {
+        const formatter = new jasmineUnderTest.ExceptionFormatter();
+
+        expect(function() {
+          formatter.stack(
+            new Error('error', {
+              cause: function() {}
+            })
+          );
+        }).not.toThrowError();
+
+        expect(function() {
+          formatter.stack(
+            new Error('error', {
+              cause: 'another error'
+            })
+          );
+        }).not.toThrowError();
+      });
     });
   });
 });

spec/core/integration/EnvSpec.js

@@ -4334,6 +4334,115 @@ describe('Env integration', function() {
     }
   });
 
+  describe('throwUnless', function() {
+    it('throws when the matcher fails', async function() {
+      let thrown;
+
+      env.it('a spec', function() {
+        try {
+          env.throwUnless(1).toEqual(2);
+        } catch (e) {
+          thrown = e;
+        }
+      });
+
+      await env.execute();
+      expect(thrown).toBeInstanceOf(Error);
+      expect(thrown.passed).toEqual(false);
+      expect(thrown.matcherName).toEqual('toEqual');
+      expect(thrown.message).toEqual('Expected 1 to equal 2.');
+      expect(thrown.actual).toEqual(1);
+      expect(thrown.expected).toEqual(2);
+    });
+
+    it('does not throw when the matcher passes', async function() {
+      let threw = false;
+
+      env.it('a spec', function() {
+        try {
+          env.throwUnless(1).toEqual(1);
+        } catch (e) {
+          threw = true;
+        }
+      });
+
+      await env.execute();
+      expect(threw).toBe(false);
+    });
+
+    it('does not cause a failure if the error does not propagate back to jasmine', async function() {
+      env.it('a spec', function() {
+        try {
+          env.throwUnless(1).toEqual(2);
+        } catch (e) {}
+      });
+
+      const reporter = jasmine.createSpyObj('reporter', ['specDone']);
+      env.addReporter(reporter);
+
+      await env.execute();
+      expect(reporter.specDone).toHaveBeenCalledWith(
+        jasmine.objectContaining({ status: 'passed' })
+      );
+    });
+  });
+
+  describe('throwUnlessAsync', function() {
+    it('throws when the matcher fails', async function() {
+      const promise = Promise.resolve('a');
+      let thrown;
+
+      env.it('a spec', async function() {
+        try {
+          await env.throwUnlessAsync(promise).toBeResolvedTo('b');
+        } catch (e) {
+          thrown = e;
+        }
+      });
+
+      await env.execute();
+      expect(thrown).toBeInstanceOf(Error);
+      expect(thrown.passed).toEqual(false);
+      expect(thrown.matcherName).toEqual('toBeResolvedTo');
+      expect(thrown.message).toEqual(
+        "Expected a promise to be resolved to 'b' but it was resolved to 'a'."
+      );
+      expect(thrown.actual).toBe(promise);
+      expect(thrown.expected).toEqual('b');
+    });
+
+    it('does not throw when the matcher passes', async function() {
+      let threw = false;
+
+      env.it('a spec', async function() {
+        try {
+          await env.throwUnlessAsync(Promise.resolve()).toBeResolved();
+        } catch (e) {
+          threw = true;
+        }
+      });
+
+      await env.execute();
+      expect(threw).toBe(false);
+    });
+
+    it('does not cause a failure if the error does not propagate back to jasmine', async function() {
+      env.it('a spec', async function() {
+        try {
+          await env.throwUnlessAsync(Promise.resolve()).toBeRejected();
+        } catch (e) {}
+      });
+
+      const reporter = jasmine.createSpyObj('reporter', ['specDone']);
+      env.addReporter(reporter);
+
+      await env.execute();
+      expect(reporter.specDone).toHaveBeenCalledWith(
+        jasmine.objectContaining({ status: 'passed' })
+      );
+    });
+  });
+
   function browserEventMethods() {
     return {
       listeners_: { error: [], unhandledrejection: [] },

spec/support/jasmine-browser.js

@@ -28,16 +28,19 @@ module.exports = {
   random: true,
   browser: {
     name: process.env.JASMINE_BROWSER || 'firefox',
-    useSauce: process.env.USE_SAUCE === 'true',
-    sauce: {
-      name: `jasmine-core ${new Date().toISOString()}`,
-      os: process.env.SAUCE_OS,
+    useRemoteSeleniumGrid: process.env.USE_SAUCE === 'true',
+    remoteSeleniumGrid: {
+      url: 'https://ondemand.saucelabs.com/wd/hub',
       browserVersion: process.env.SAUCE_BROWSER_VERSION,
-      build: `Core ${process.env.TRAVIS_BUILD_NUMBER || 'Ran locally'}`,
-      tags: ['Jasmine-Core'],
-      tunnelIdentifier: process.env.SAUCE_TUNNEL_IDENTIFIER,
-      username: process.env.SAUCE_USERNAME,
-      accessKey: process.env.SAUCE_ACCESS_KEY
+      platformName: process.env.SAUCE_OS,
+      'sauce:options': {
+        name: `jasmine-core ${new Date().toISOString()}`,
+        build: `Core ${process.env.CIRCLE_BUILD_NUM || 'Ran locally'}`,
+        tags: ['Jasmine-Core'],
+        tunnelIdentifier: process.env.SAUCE_TUNNEL_IDENTIFIER,
+        username: process.env.SAUCE_USERNAME,
+        accessKey: process.env.SAUCE_ACCESS_KEY
+      }
     }
   }
 };

src/core/Env.js

@@ -264,6 +264,49 @@ getJasmineRequireObj().Env = function(j$) {
       }
     };
 
+    const handleThrowUnlessFailure = function(passed, result) {
+      if (!passed) {
+        /**
+         * @interface
+         * @name ThrowUnlessFailure
+         * @extends Error
+         * @description Represents a failure of an expectation evaluated with
+         * {@link throwUnless}. Properties of this error are a subset of the
+         * properties of {@link Expectation} and have the same values.
+         * @property {String} matcherName - The name of the matcher that was executed for this expectation.
+         * @property {String} message - The failure message for the expectation.
+         * @property {Boolean} passed - Whether the expectation passed or failed.
+         * @property {Object} expected - If the expectation failed, what was the expected value.
+         * @property {Object} actual - If the expectation failed, what actual value was produced.
+         */
+        const error = new Error(result.message);
+        error.passed = result.passed;
+        error.message = result.message;
+        error.expected = result.expected;
+        error.actual = result.actual;
+        error.matcherName = result.matcherName;
+        throw error;
+      }
+    };
+
+    const throwUnlessFactory = function(actual, spec) {
+      return j$.Expectation.factory({
+        matchersUtil: runableResources.makeMatchersUtil(),
+        customMatchers: runableResources.customMatchers(),
+        actual: actual,
+        addExpectationResult: handleThrowUnlessFailure
+      });
+    };
+
+    const throwUnlessAsyncFactory = function(actual, spec) {
+      return j$.Expectation.asyncFactory({
+        matchersUtil: runableResources.makeMatchersUtil(),
+        customAsyncMatchers: runableResources.customAsyncMatchers(),
+        actual: actual,
+        addExpectationResult: handleThrowUnlessFailure
+      });
+    };
+
     // TODO: Unify recordLateError with recordLateExpectation? The extra
     // diagnostic info added by the latter is probably useful in most cases.
     function recordLateError(error) {
@@ -767,23 +810,37 @@ getJasmineRequireObj().Env = function(j$) {
     };
 
     this.expect = function(actual) {
-      if (!runner.currentRunable()) {
+      const runable = runner.currentRunable();
+
+      if (!runable) {
         throw new Error(
           "'expect' was used when there was no current spec, this could be because an asynchronous test timed out"
         );
       }
 
-      return runner.currentRunable().expect(actual);
+      return runable.expectationFactory(actual, runable);
     };
 
     this.expectAsync = function(actual) {
-      if (!runner.currentRunable()) {
+      const runable = runner.currentRunable();
+
+      if (!runable) {
         throw new Error(
           "'expectAsync' was used when there was no current spec, this could be because an asynchronous test timed out"
         );
       }
 
-      return runner.currentRunable().expectAsync(actual);
+      return runable.asyncExpectationFactory(actual, runable);
+    };
+
+    this.throwUnless = function(actual) {
+      const runable = runner.currentRunable();
+      return throwUnlessFactory(actual, runable);
+    };
+
+    this.throwUnlessAsync = function(actual) {
+      const runable = runner.currentRunable();
+      return throwUnlessAsyncFactory(actual, runable);
     };
 
     this.beforeEach = function(beforeEachFunction, timeout) {

src/core/ExceptionFormatter.js

@@ -67,7 +67,7 @@ getJasmineRequireObj().ExceptionFormatter = function(j$) {
         lines.unshift(stackTrace.message);
       }
 
-      if (error.cause) {
+      if (error.cause && error.cause instanceof Error) {
         const substack = this.stack_(error.cause, {
           messageHandling: 'require'
         });
@@ -102,7 +102,7 @@ getJasmineRequireObj().ExceptionFormatter = function(j$) {
       const result = {};
       let empty = true;
 
-      for (const prop in error) {
+      for (const prop of Object.keys(error)) {
         if (ignoredProperties.includes(prop)) {
           continue;
         }

src/core/Spec.js

@@ -70,14 +70,6 @@ getJasmineRequireObj().Spec = function(j$) {
     this.result.properties[key] = value;
   };
 
-  Spec.prototype.expect = function(actual) {
-    return this.expectationFactory(actual, this);
-  };
-
-  Spec.prototype.expectAsync = function(actual) {
-    return this.asyncExpectationFactory(actual, this);
-  };
-
   Spec.prototype.execute = function(
     queueRunnerFactory,
     onComplete,

src/core/Suite.js

@@ -28,14 +28,6 @@ getJasmineRequireObj().Suite = function(j$) {
     this.result.properties[key] = value;
   };
 
-  Suite.prototype.expect = function(actual) {
-    return this.expectationFactory(actual, this);
-  };
-
-  Suite.prototype.expectAsync = function(actual) {
-    return this.asyncExpectationFactory(actual, this);
-  };
-
   Suite.prototype.getFullName = function() {
     const fullName = [];
     for (

src/core/requireInterface.js

@@ -225,6 +225,54 @@ getJasmineRequireObj().interface = function(jasmine, env) {
       return env.expectAsync(actual);
     },
 
+    /**
+     * Create an asynchronous expectation for a spec and throw an error if it fails.
+     *
+     * This is intended to allow Jasmine matchers to be used with tools like
+     * testing-library's `waitFor`, which expect matcher failures to throw
+     * exceptions and not trigger a spec failure if the exception is caught.
+     * It can also be used to integration-test custom matchers.
+     *
+     * If the resulting expectation fails, a {@link ThrowUnlessFailure} will be
+     * thrown. A failed expectation will not result in a spec failure unless the
+     * exception propagates back to Jasmine, either via the call stack or via
+     * the global unhandled exception/unhandled promise rejection events.
+     * @name throwUnlessAsync
+     * @since 5.1.0
+     * @function
+     * @param actual
+     * @global
+     * @param {Object} actual - Actual computed value to test expectations against.
+     * @return {matchers}
+     */
+    throwUnlessAsync: function(actual) {
+      return env.throwUnless(actual);
+    },
+
+    /**
+     * Create an expectation for a spec and throw an error if it fails.
+     *
+     * This is intended to allow Jasmine matchers to be used with tools like
+     * testing-library's `waitFor`, which expect matcher failures to throw
+     * exceptions and not trigger a spec failure if the exception is caught.
+     * It can also be used to integration-test custom matchers.
+     *
+     * If the resulting expectation fails, a {@link ThrowUnlessFailure} will be
+     * thrown. A failed expectation will not result in a spec failure unless the
+     * exception propagates back to Jasmine, either via the call stack or via
+     * the global unhandled exception/unhandled promise rejection events.
+     * @name throwUnless
+     * @since 5.1.0
+     * @function
+     * @param actual
+     * @global
+     * @param {Object} actual - Actual computed value to test expectations against.
+     * @return {matchers}
+     */
+    throwUnless: function(actual) {
+      return env.throwUnless(actual);
+    },
+
     /**
      * Mark a spec as pending, expectation results will be ignored.
      * @name pending