[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/is-callable/.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: [ljharb]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: npm/is-callable
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

frontend/node_modules/is-callable/CHANGELOG.md

@@ -0,0 +1,158 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [v1.2.7](https://github.com/inspect-js/is-callable/compare/v1.2.6...v1.2.7) - 2022-09-23
+
+### Commits
+
+- [Fix] recognize `document.all` in IE 6-10 [`06c1db2`](https://github.com/inspect-js/is-callable/commit/06c1db2b9b2e0f28428e1293eb572f8f93871ec7)
+- [Tests] improve logic for FF 20-35 [`0f7d9b9`](https://github.com/inspect-js/is-callable/commit/0f7d9b9c7fe149ca87e71f0a125ade251a6a578c)
+- [Fix] handle `document.all` in FF 27 (and +, probably) [`696c661`](https://github.com/inspect-js/is-callable/commit/696c661b8c0810c2d05ab172f1607f4e77ddf81e)
+- [Tests] fix proxy tests in FF 42-63 [`985df0d`](https://github.com/inspect-js/is-callable/commit/985df0dd36f8cfe6f1993657b7c0f4cfc19dae30)
+- [readme] update tested browsers [`389e919`](https://github.com/inspect-js/is-callable/commit/389e919493b1cb2010126b0411e5291bf76169bd)
+- [Fix] detect `document.all` in Opera 12.16 [`b9f1022`](https://github.com/inspect-js/is-callable/commit/b9f1022b3d7e466b7f09080bd64c253caf644325)
+- [Fix] HTML elements: properly report as callable in Opera 12.16 [`17391fe`](https://github.com/inspect-js/is-callable/commit/17391fe02b895777c4337be28dca3b364b743b34)
+- [Tests] fix inverted logic in FF3 test [`056ebd4`](https://github.com/inspect-js/is-callable/commit/056ebd48790f46ca18ff5b12f51b44c08ccc3595)
+
+## [v1.2.6](https://github.com/inspect-js/is-callable/compare/v1.2.5...v1.2.6) - 2022-09-14
+
+### Commits
+
+- [Fix] work for `document.all` in Firefox 3 and IE 6-8 [`015132a`](https://github.com/inspect-js/is-callable/commit/015132aaef886ec777b5b3593ef4ce461dd0c7d4)
+- [Test] skip function toString check for nullish values [`8698116`](https://github.com/inspect-js/is-callable/commit/8698116f95eb59df8b48ec8e4585fc1cdd8cae9f)
+- [readme] add "supported engines" section [`0442207`](https://github.com/inspect-js/is-callable/commit/0442207a89a1554d41ba36daf21862ef7ccbd500)
+- [Tests] skip one of the fixture objects in FF 3.6 [`a501141`](https://github.com/inspect-js/is-callable/commit/a5011410bc6edb276c6ec8b47ce5c5d83c4bee15)
+- [Tests] allow `class` constructor tests to fail in FF v45 - v54, which has undetectable classes [`b12e4a4`](https://github.com/inspect-js/is-callable/commit/b12e4a4d8c438678bd7710f9f896680150766b51)
+- [Fix] Safari 4: regexes should not be considered callable [`4b732ff`](https://github.com/inspect-js/is-callable/commit/4b732ffa34346db3f0193ea4e46b7d4e637e6c82)
+- [Fix] properly recognize `document.all` in Safari 4 [`3193735`](https://github.com/inspect-js/is-callable/commit/319373525dc4603346661641840cd9a3e0613136)
+
+## [v1.2.5](https://github.com/inspect-js/is-callable/compare/v1.2.4...v1.2.5) - 2022-09-11
+
+### Commits
+
+- [actions] reuse common workflows [`5bb4b32`](https://github.com/inspect-js/is-callable/commit/5bb4b32dc93987328ab4f396601f751c4a7abd62)
+- [meta] better `eccheck` command [`b9bd597`](https://github.com/inspect-js/is-callable/commit/b9bd597322b6e3a24c74c09881ca73e1d9f9f485)
+- [meta] use `npmignore` to autogenerate an npmignore file [`3192d38`](https://github.com/inspect-js/is-callable/commit/3192d38527c7fc461d05d5aa93d47628e658bc45)
+- [Fix] for HTML constructors, always use `tryFunctionObject` even in pre-toStringTag browsers [`3076ea2`](https://github.com/inspect-js/is-callable/commit/3076ea21d1f6ecc1cb711dcf1da08f257892c72b)
+- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `available-typed-arrays`, `object-inspect`, `safe-publish-latest`, `tape` [`8986746`](https://github.com/inspect-js/is-callable/commit/89867464c42adc5cd375ee074a4574b0295442cb)
+- [meta] add `auto-changelog` [`7dda9d0`](https://github.com/inspect-js/is-callable/commit/7dda9d04e670a69ae566c8fa596da4ff4371e615)
+- [Fix] properly report `document.all` [`da90b2b`](https://github.com/inspect-js/is-callable/commit/da90b2b68dc4f33702c2e01ad07b4f89bcb60984)
+- [actions] update codecov uploader [`c8f847c`](https://github.com/inspect-js/is-callable/commit/c8f847c90e04e54ff73c7cfae86e96e94990e324)
+- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `object-inspect`, `tape` [`899ae00`](https://github.com/inspect-js/is-callable/commit/899ae00b6abd10d81fc8bc7f02b345fd885d5f56)
+- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `es-value-fixtures`, `object-inspect`, `tape` [`344e913`](https://github.com/inspect-js/is-callable/commit/344e913b149609bf741aa7345fa32dc0b90d8893)
+- [meta] remove greenkeeper config [`737dce5`](https://github.com/inspect-js/is-callable/commit/737dce5590b1abb16183a63cb9d7d26920b3b394)
+- [meta] npmignore coverage output [`680a883`](https://github.com/inspect-js/is-callable/commit/680a8839071bf36a419fe66e1ced7a3303c27b28)
+
+<!-- auto-changelog-above -->
+1.2.4 / 2021-08-05
+=================
+  * [Fix] use `has-tostringtag` approach to behave correctly in the presence of symbol shams
+  * [readme] fix repo URLs
+  * [readme] add actions and codecov badges
+  * [readme] remove defunct badges
+  * [meta] ignore eclint checking coverage output
+  * [meta] use `prepublishOnly` script for npm 7+
+  * [actions] use `node/install` instead of `node/run`; use `codecov` action
+  * [actions] remove unused workflow file
+  * [Tests] run `nyc` on all tests; use `tape` runner
+  * [Tests] use `available-typed-arrays`, `for-each`, `has-symbols`, `object-inspect`
+  * [Dev Deps] update `available-typed-arrays`, `eslint`, `@ljharb/eslint-config`, `aud`, `object-inspect`, `tape`
+
+1.2.3 / 2021-01-31
+=================
+  * [Fix] `document.all` is callable (do not use `document.all`!)
+  * [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `tape`
+  * [Tests] migrate tests to Github Actions
+  * [actions] add "Allow Edits" workflow
+  * [actions] switch Automatic Rebase workflow to `pull_request_target` event
+
+1.2.2 / 2020-09-21
+=================
+  * [Fix] include actual fix from 579179e
+  * [Dev Deps] update `eslint`
+
+1.2.1 / 2020-09-09
+=================
+  * [Fix] phantomjs‘ Reflect.apply does not throw properly on a bad array-like
+  * [Dev Deps] update `eslint`, `@ljharb/eslint-config`
+  * [meta] fix eclint error
+
+1.2.0 / 2020-06-02
+=================
+  * [New] use `Reflect.apply`‑based callability detection
+  * [readme] add install instructions (#55)
+  * [meta] only run `aud` on prod deps
+  * [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `tape`, `make-arrow-function`, `make-generator-function`; add `aud`, `safe-publish-latest`, `make-async-function`
+  * [Tests] add tests for function proxies (#53, #25)
+
+1.1.5 / 2019-12-18
+=================
+  * [meta] remove unused Makefile and associated utilities
+  * [meta] add `funding` field; add FUNDING.yml
+  * [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `semver`, `tape`, `covert`, `rimraf`
+  * [Tests] use shared travis configs
+  * [Tests] use `eccheck` over `editorconfig-tools`
+  * [Tests] use `npx aud` instead of `nsp` or `npm audit` with hoops
+  * [Tests] remove `jscs`
+  * [actions] add automatic rebasing / merge commit blocking
+
+1.1.4 / 2018-07-02
+=================
+  * [Fix] improve `class` and arrow function detection (#30, #31)
+  * [Tests] on all latest node minors; improve matrix
+  * [Dev Deps] update all dev deps
+
+1.1.3 / 2016-02-27
+=================
+  * [Fix] ensure “class “ doesn’t screw up “class” detection
+  * [Tests] up to `node` `v5.7`, `v4.3`
+  * [Dev Deps] update to `eslint` v2, `@ljharb/eslint-config`, `jscs`
+
+1.1.2 / 2016-01-15
+=================
+  * [Fix] Make sure comments don’t screw up “class” detection (#4)
+  * [Tests] up to `node` `v5.3`
+  * [Tests] Add `parallelshell`, run both `--es-staging` and stock tests at once
+  * [Dev Deps] update `tape`, `jscs`, `nsp`, `eslint`, `@ljharb/eslint-config`
+  * [Refactor] convert `isNonES6ClassFn` into `isES6ClassFn`
+
+1.1.1 / 2015-11-30
+=================
+  * [Fix] do not throw when a non-function has a function in its [[Prototype]] (#2)
+  * [Dev Deps] update `tape`, `eslint`, `@ljharb/eslint-config`, `jscs`, `nsp`, `semver`
+  * [Tests] up to `node` `v5.1`
+  * [Tests] no longer allow node 0.8 to fail.
+  * [Tests] fix npm upgrades in older nodes
+
+1.1.0 / 2015-10-02
+=================
+  * [Fix] Some browsers report TypedArray constructors as `typeof object`
+  * [New] return false for "class" constructors, when possible.
+  * [Tests] up to `io.js` `v3.3`, `node` `v4.1`
+  * [Dev Deps] update `eslint`, `editorconfig-tools`, `nsp`, `tape`, `semver`, `jscs`, `covert`, `make-arrow-function`
+  * [Docs] Switch from vb.teelaun.ch to versionbadg.es for the npm version badge SVG
+
+1.0.4 / 2015-01-30
+=================
+  * If @@toStringTag is not present, use the old-school Object#toString test.
+
+1.0.3 / 2015-01-29
+=================
+  * Add tests to ensure arrow functions are callable.
+  * Refactor to aid optimization of non-try/catch code.
+
+1.0.2 / 2015-01-29
+=================
+  * Fix broken package.json
+
+1.0.1 / 2015-01-29
+=================
+  * Add early exit for typeof not "function"
+
+1.0.0 / 2015-01-29
+=================
+  * Initial release.

frontend/node_modules/is-callable/README.md

@@ -0,0 +1,83 @@
+# is-callable <sup>[![Version Badge][2]][1]</sup>
+
+[![github actions][actions-image]][actions-url]
+[![coverage][codecov-image]][codecov-url]
+[![dependency status][5]][6]
+[![dev dependency status][7]][8]
+[![License][license-image]][license-url]
+[![Downloads][downloads-image]][downloads-url]
+
+[![npm badge][11]][1]
+
+Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.
+
+## Supported engines
+Automatically tested in every minor version of node.
+
+Manually tested in:
+ - Safari: v4 - v15 <sub>(4, 5, 5.1, 6.0.5, 6.2, 7.1, 8, 9.1.3, 10.1.2, 11.1.2, 12.1, 13.1.2, 14.1.2, 15.3, 15.6.1)</sub>
+   - Note: Safari 9 has `class`, but `Function.prototype.toString` hides that progeny and makes them look like functions, so `class` constructors will be reported by this package as callable, when they are not in fact callable.
+ - Chrome: v15 - v81, v83 - v106<sub>(every integer version)</sub>
+   - Note: This includes Edge v80+ and Opera v15+, which matches Chrome
+ - Firefox: v3, v3.6, v4 - v105 <sub>(every integer version)</sub>
+   - Note: v45 - v54 has `class`, but `Function.prototype.toString` hides that progeny and makes them look like functions, so `class` constructors will be reported by this package as callable, when they are not in fact callable.
+   - Note: in v42 - v63, `Function.prototype.toString` throws on HTML element constructors, or a Proxy to a function
+   - Note: in v20 - v35, HTML element constructors are not callable, despite having typeof `function`.
+   - Note: in v19, `document.all` is not callable.
+ - IE: v6 - v11<sub>(every integer version</sub>
+ - Opera: v11.1, v11.5, v11.6, v12.1, v12.14, v12.15, v12.16, v15+ <sub>v15+ matches Chrome</sub>
+
+## Example
+
+```js
+var isCallable = require('is-callable');
+var assert = require('assert');
+
+assert.notOk(isCallable(undefined));
+assert.notOk(isCallable(null));
+assert.notOk(isCallable(false));
+assert.notOk(isCallable(true));
+assert.notOk(isCallable([]));
+assert.notOk(isCallable({}));
+assert.notOk(isCallable(/a/g));
+assert.notOk(isCallable(new RegExp('a', 'g')));
+assert.notOk(isCallable(new Date()));
+assert.notOk(isCallable(42));
+assert.notOk(isCallable(NaN));
+assert.notOk(isCallable(Infinity));
+assert.notOk(isCallable(new Number(42)));
+assert.notOk(isCallable('foo'));
+assert.notOk(isCallable(Object('foo')));
+
+assert.ok(isCallable(function () {}));
+assert.ok(isCallable(function* () {}));
+assert.ok(isCallable(x => x * x));
+```
+
+## Install
+
+Install with
+
+```
+npm install is-callable
+```
+
+## Tests
+
+Simply clone the repo, `npm install`, and run `npm test`
+
+[1]: https://npmjs.org/package/is-callable
+[2]: https://versionbadg.es/inspect-js/is-callable.svg
+[5]: https://david-dm.org/inspect-js/is-callable.svg
+[6]: https://david-dm.org/inspect-js/is-callable
+[7]: https://david-dm.org/inspect-js/is-callable/dev-status.svg
+[8]: https://david-dm.org/inspect-js/is-callable#info=devDependencies
+[11]: https://nodei.co/npm/is-callable.png?downloads=true&stars=true
+[license-image]: https://img.shields.io/npm/l/is-callable.svg
+[license-url]: LICENSE
+[downloads-image]: https://img.shields.io/npm/dm/is-callable.svg
+[downloads-url]: https://npm-stat.com/charts.html?package=is-callable
+[codecov-image]: https://codecov.io/gh/inspect-js/is-callable/branch/main/graphs/badge.svg
+[codecov-url]: https://app.codecov.io/gh/inspect-js/is-callable/
+[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/is-callable
+[actions-url]: https://github.com/inspect-js/is-callable/actions

frontend/node_modules/is-callable/package.json

@@ -0,0 +1,106 @@
+{
+	"name": "is-callable",
+	"version": "1.2.7",
+	"author": {
+		"name": "Jordan Harband",
+		"email": "ljharb@gmail.com",
+		"url": "http://ljharb.codes"
+	},
+	"funding": {
+		"url": "https://github.com/sponsors/ljharb"
+	},
+	"contributors": [
+		{
+			"name": "Jordan Harband",
+			"email": "ljharb@gmail.com",
+			"url": "http://ljharb.codes"
+		}
+	],
+	"description": "Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.",
+	"license": "MIT",
+	"main": "index.js",
+	"scripts": {
+		"prepack": "npmignore --auto --commentLines=autogenerated",
+		"version": "auto-changelog && git add CHANGELOG.md",
+		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"",
+		"prepublishOnly": "safe-publish-latest",
+		"prepublish": "not-in-publish || npm run prepublishOnly",
+		"pretest": "npm run --silent lint",
+		"test": "npm run tests-only --",
+		"posttest": "aud --production",
+		"tests-only": "nyc tape 'test/**/*.js'",
+		"prelint": "eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git')",
+		"lint": "eslint --ext=js,mjs ."
+	},
+	"repository": {
+		"type": "git",
+		"url": "git://github.com/inspect-js/is-callable.git"
+	},
+	"keywords": [
+		"Function",
+		"function",
+		"callable",
+		"generator",
+		"generator function",
+		"arrow",
+		"arrow function",
+		"ES6",
+		"toStringTag",
+		"@@toStringTag"
+	],
+	"devDependencies": {
+		"@ljharb/eslint-config": "^21.0.0",
+		"aud": "^2.0.0",
+		"auto-changelog": "^2.4.0",
+		"available-typed-arrays": "^1.0.5",
+		"eclint": "^2.8.1",
+		"es-value-fixtures": "^1.4.2",
+		"eslint": "=8.8.0",
+		"for-each": "^0.3.3",
+		"has-tostringtag": "^1.0.0",
+		"make-arrow-function": "^1.2.0",
+		"make-async-function": "^1.0.0",
+		"make-generator-function": "^2.0.0",
+		"npmignore": "^0.3.0",
+		"nyc": "^10.3.2",
+		"object-inspect": "^1.12.2",
+		"rimraf": "^2.7.1",
+		"safe-publish-latest": "^2.0.0",
+		"tape": "^5.6.0"
+	},
+	"testling": {
+		"files": "test/index.js",
+		"browsers": [
+			"iexplore/6.0..latest",
+			"firefox/3.0..6.0",
+			"firefox/15.0..latest",
+			"firefox/nightly",
+			"chrome/4.0..10.0",
+			"chrome/20.0..latest",
+			"chrome/canary",
+			"opera/10.0..latest",
+			"opera/next",
+			"safari/4.0..latest",
+			"ipad/6.0..latest",
+			"iphone/6.0..latest",
+			"android-browser/4.2"
+		]
+	},
+	"engines": {
+		"node": ">= 0.4"
+	},
+	"auto-changelog": {
+		"output": "CHANGELOG.md",
+		"template": "keepachangelog",
+		"unreleased": false,
+		"commitLimit": false,
+		"backfillLimit": false,
+		"hideCredit": true,
+		"startingVersion": "v1.2.5"
+	},
+	"publishConfig": {
+		"ignore": [
+			".github/workflows"
+		]
+	}
+}

frontend/node_modules/is-callable/test/index.js

@@ -0,0 +1,244 @@
+'use strict';
+
+/* eslint no-magic-numbers: 1 */
+
+var test = require('tape');
+var isCallable = require('../');
+var hasToStringTag = require('has-tostringtag/shams')();
+var v = require('es-value-fixtures');
+var forEach = require('for-each');
+var inspect = require('object-inspect');
+var typedArrayNames = require('available-typed-arrays')();
+var generators = require('make-generator-function')();
+var arrows = require('make-arrow-function').list();
+var asyncs = require('make-async-function').list();
+var weirdlyCommentedArrowFn;
+try {
+	/* eslint-disable no-new-func */
+	weirdlyCommentedArrowFn = Function('return cl/*/**/=>/**/ass - 1;')();
+	/* eslint-enable no-new-func */
+} catch (e) { /**/ }
+
+var isIE68 = !(0 in [undefined]);
+var isFirefox = typeof window !== 'undefined' && ('netscape' in window) && (/ rv:/).test(navigator.userAgent);
+var fnToStringCoerces;
+try {
+	Function.prototype.toString.call(v.uncoercibleFnObject);
+	fnToStringCoerces = true;
+} catch (e) {
+	fnToStringCoerces = false;
+}
+
+var noop = function () {};
+var classFake = function classFake() { }; // eslint-disable-line func-name-matching
+var returnClass = function () { return ' class '; };
+var return3 = function () { return 3; };
+/* for coverage */
+noop();
+classFake();
+returnClass();
+return3();
+/* end for coverage */
+
+var proxy;
+if (typeof Proxy === 'function') {
+	try {
+		proxy = new Proxy(function () {}, {});
+		// for coverage
+		proxy();
+		String(proxy);
+	} catch (_) {
+		// Older engines throw a `TypeError` when `Function.prototype.toString` is called on a Proxy object.
+		proxy = null;
+	}
+}
+
+var invokeFunction = function invokeFunctionString(str) {
+	var result;
+	try {
+		/* eslint-disable no-new-func */
+		var fn = Function(str);
+		/* eslint-enable no-new-func */
+		result = fn();
+	} catch (e) {}
+	return result;
+};
+
+var classConstructor = invokeFunction('"use strict"; return class Foo {}');
+var hasDetectableClasses = classConstructor && Function.prototype.toString.call(classConstructor) === 'class Foo {}';
+
+var commentedClass = invokeFunction('"use strict"; return class/*kkk*/\n//blah\n Bar\n//blah\n {}');
+var commentedClassOneLine = invokeFunction('"use strict"; return class/**/A{}');
+var classAnonymous = invokeFunction('"use strict"; return class{}');
+var classAnonymousCommentedOneLine = invokeFunction('"use strict"; return class/*/*/{}');
+
+test('not callables', function (t) {
+	t.notOk(isCallable(), 'implicit undefined is not callable');
+
+	forEach(v.nonFunctions.concat([
+		Object(42),
+		Object('foo'),
+		NaN,
+		[],
+		/a/g,
+		new RegExp('a', 'g'),
+		new Date()
+	]), function (nonFunction) {
+		if (fnToStringCoerces && nonFunction === v.coercibleFnObject) {
+			t.comment('FF 3.6 has a Function toString that coerces its receiver, so this test is skipped');
+			return;
+		}
+		if (nonFunction != null) { // eslint-disable-line eqeqeq
+			if (isFirefox) {
+			// Firefox 3 throws some kind of *object* here instead of a proper error
+				t['throws'](
+					function () { Function.prototype.toString.call(nonFunction); },
+					inspect(nonFunction) + ' can not be used with Function toString'
+				);
+			} else {
+				t['throws'](
+					function () { Function.prototype.toString.call(nonFunction); },
+					TypeError,
+					inspect(nonFunction) + ' can not be used with Function toString'
+				);
+			}
+		}
+		t.equal(isCallable(nonFunction), false, inspect(nonFunction) + ' is not callable');
+	});
+
+	t.test('non-function with function in its [[Prototype]] chain', function (st) {
+		var Foo = function Bar() {};
+		Foo.prototype = noop;
+		st.equal(isCallable(Foo), true, 'sanity check: Foo is callable');
+		st.equal(isCallable(new Foo()), false, 'instance of Foo is not callable');
+		st.end();
+	});
+
+	t.end();
+});
+
+test('@@toStringTag', { skip: !hasToStringTag }, function (t) {
+	var fakeFunction = {
+		toString: function () { return String(return3); },
+		valueOf: return3
+	};
+	fakeFunction[Symbol.toStringTag] = 'Function';
+	t.equal(String(fakeFunction), String(return3));
+	t.equal(Number(fakeFunction), return3());
+	t.notOk(isCallable(fakeFunction), 'fake Function with @@toStringTag "Function" is not callable');
+	t.end();
+});
+
+test('Functions', function (t) {
+	t.ok(isCallable(noop), 'function is callable');
+	t.ok(isCallable(classFake), 'function with name containing "class" is callable');
+	t.ok(isCallable(returnClass), 'function with string " class " is callable');
+	t.ok(isCallable(isCallable), 'isCallable is callable');
+	t.end();
+});
+
+test('Typed Arrays', { skip: typedArrayNames.length === 0 }, function (st) {
+	forEach(typedArrayNames, function (typedArray) {
+		st.ok(isCallable(global[typedArray]), typedArray + ' is callable');
+	});
+	st.end();
+});
+
+test('Generators', { skip: generators.length === 0 }, function (t) {
+	forEach(generators, function (genFn) {
+		t.ok(isCallable(genFn), 'generator function ' + genFn + ' is callable');
+	});
+	t.end();
+});
+
+test('Arrow functions', { skip: arrows.length === 0 }, function (t) {
+	forEach(arrows, function (arrowFn) {
+		t.ok(isCallable(arrowFn), 'arrow function ' + arrowFn + ' is callable');
+	});
+	t.ok(isCallable(weirdlyCommentedArrowFn), 'weirdly commented arrow functions are callable');
+	t.end();
+});
+
+test('"Class" constructors', {
+	skip: !classConstructor || !commentedClass || !commentedClassOneLine || !classAnonymous, todo: !hasDetectableClasses
+}, function (t) {
+	if (!hasDetectableClasses) {
+		t.comment('WARNING: This engine does not support detectable classes');
+	}
+	t.notOk(isCallable(classConstructor), 'class constructors are not callable');
+	t.notOk(isCallable(commentedClass), 'class constructors with comments in the signature are not callable');
+	t.notOk(isCallable(commentedClassOneLine), 'one-line class constructors with comments in the signature are not callable');
+	t.notOk(isCallable(classAnonymous), 'anonymous class constructors are not callable');
+	t.notOk(isCallable(classAnonymousCommentedOneLine), 'anonymous one-line class constructors with comments in the signature are not callable');
+	t.end();
+});
+
+test('`async function`s', { skip: asyncs.length === 0 }, function (t) {
+	forEach(asyncs, function (asyncFn) {
+		t.ok(isCallable(asyncFn), '`async function` ' + asyncFn + ' is callable');
+	});
+	t.end();
+});
+
+test('proxies of functions', { skip: !proxy }, function (t) {
+	t.equal(isCallable(proxy), true, 'proxies of functions are callable');
+	t.end();
+});
+
+test('throwing functions', function (t) {
+	t.plan(1);
+
+	var thrower = function (a) { return a.b; };
+	t.ok(isCallable(thrower), 'a function that throws is callable');
+});
+
+test('DOM', function (t) {
+	/* eslint-env browser */
+
+	t.test('document.all', { skip: typeof document !== 'object' }, function (st) {
+		st.notOk(isCallable(document), 'document is not callable');
+
+		var all = document.all;
+		var isFF3 = !isIE68 && Object.prototype.toString(all) === Object.prototype.toString.call(document.all); // this test is true in IE 6-8 also
+		var expected = false;
+		if (!isFF3) {
+			try {
+				expected = document.all('') == null; // eslint-disable-line eqeqeq
+			} catch (e) { /**/ }
+		}
+		st.equal(isCallable(document.all), expected, 'document.all is ' + (isFF3 ? 'not ' : '') + 'callable');
+
+		st.end();
+	});
+
+	forEach([
+		'HTMLElement',
+		'HTMLAnchorElement'
+	], function (name) {
+		var constructor = global[name];
+
+		t.test(name, { skip: !constructor }, function (st) {
+			st.match(typeof constructor, /^(?:function|object)$/, name + ' is a function or object');
+
+			var callable = isCallable(constructor);
+			st.equal(typeof callable, 'boolean');
+
+			if (callable) {
+				st.doesNotThrow(
+					function () { Function.prototype.toString.call(constructor); },
+					'anything this library claims is callable should be accepted by Function toString'
+				);
+			} else {
+				st['throws'](
+					function () { Function.prototype.toString.call(constructor); },
+					TypeError,
+					'anything this library claims is not callable should not be accepted by Function toString'
+				);
+			}
+
+			st.end();
+		});
+	});
+
+	t.end();
+});