luhn-generator
Version:
A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm
382 lines (359 loc) • 13.5 kB
JavaScript
;
var $ = require('../internals/export');
var IS_PURE = require('../internals/is-pure');
var global = require('../internals/global');
var getBuiltIn = require('../internals/get-built-in');
var NativePromise = require('../internals/native-promise-constructor');
var redefine = require('../internals/redefine');
var redefineAll = require('../internals/redefine-all');
var setToStringTag = require('../internals/set-to-string-tag');
var setSpecies = require('../internals/set-species');
var isObject = require('../internals/is-object');
var aFunction = require('../internals/a-function');
var anInstance = require('../internals/an-instance');
var inspectSource = require('../internals/inspect-source');
var iterate = require('../internals/iterate');
var checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');
var speciesConstructor = require('../internals/species-constructor');
var task = require('../internals/task').set;
var microtask = require('../internals/microtask');
var promiseResolve = require('../internals/promise-resolve');
var hostReportErrors = require('../internals/host-report-errors');
var newPromiseCapabilityModule = require('../internals/new-promise-capability');
var perform = require('../internals/perform');
var InternalStateModule = require('../internals/internal-state');
var isForced = require('../internals/is-forced');
var wellKnownSymbol = require('../internals/well-known-symbol');
var IS_NODE = require('../internals/engine-is-node');
var V8_VERSION = require('../internals/engine-v8-version');
var SPECIES = wellKnownSymbol('species');
var PROMISE = 'Promise';
var getInternalState = InternalStateModule.get;
var setInternalState = InternalStateModule.set;
var getInternalPromiseState = InternalStateModule.getterFor(PROMISE);
var PromiseConstructor = NativePromise;
var TypeError = global.TypeError;
var document = global.document;
var process = global.process;
var $fetch = getBuiltIn('fetch');
var newPromiseCapability = newPromiseCapabilityModule.f;
var newGenericPromiseCapability = newPromiseCapability;
var DISPATCH_EVENT = !!(document && document.createEvent && global.dispatchEvent);
var NATIVE_REJECTION_EVENT = typeof PromiseRejectionEvent == 'function';
var UNHANDLED_REJECTION = 'unhandledrejection';
var REJECTION_HANDLED = 'rejectionhandled';
var PENDING = 0;
var FULFILLED = 1;
var REJECTED = 2;
var HANDLED = 1;
var UNHANDLED = 2;
var Internal, OwnPromiseCapability, PromiseWrapper, nativeThen;
var FORCED = isForced(PROMISE, function () {
var GLOBAL_CORE_JS_PROMISE = inspectSource(PromiseConstructor) !== String(PromiseConstructor);
if (!GLOBAL_CORE_JS_PROMISE) {
// V8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables
// https://bugs.chromium.org/p/chromium/issues/detail?id=830565
// We can't detect it synchronously, so just check versions
if (V8_VERSION === 66) return true;
// Unhandled rejections tracking support, NodeJS Promise without it fails @@species test
if (!IS_NODE && !NATIVE_REJECTION_EVENT) return true;
}
// We need Promise#finally in the pure version for preventing prototype pollution
if (IS_PURE && !PromiseConstructor.prototype['finally']) return true;
// We can't use @@species feature detection in V8 since it causes
// deoptimization and performance degradation
// https://github.com/zloirock/core-js/issues/679
if (V8_VERSION >= 51 && /native code/.test(PromiseConstructor)) return false;
// Detect correctness of subclassing with @@species support
var promise = PromiseConstructor.resolve(1);
var FakePromise = function (exec) {
exec(function () { /* empty */ }, function () { /* empty */ });
};
var constructor = promise.constructor = {};
constructor[SPECIES] = FakePromise;
return !(promise.then(function () { /* empty */ }) instanceof FakePromise);
});
var INCORRECT_ITERATION = FORCED || !checkCorrectnessOfIteration(function (iterable) {
PromiseConstructor.all(iterable)['catch'](function () { /* empty */ });
});
// helpers
var isThenable = function (it) {
var then;
return isObject(it) && typeof (then = it.then) == 'function' ? then : false;
};
var notify = function (state, isReject) {
if (state.notified) return;
state.notified = true;
var chain = state.reactions;
microtask(function () {
var value = state.value;
var ok = state.state == FULFILLED;
var index = 0;
// variable length - can't use forEach
while (chain.length > index) {
var reaction = chain[index++];
var handler = ok ? reaction.ok : reaction.fail;
var resolve = reaction.resolve;
var reject = reaction.reject;
var domain = reaction.domain;
var result, then, exited;
try {
if (handler) {
if (!ok) {
if (state.rejection === UNHANDLED) onHandleUnhandled(state);
state.rejection = HANDLED;
}
if (handler === true) result = value;
else {
if (domain) domain.enter();
result = handler(value); // can throw
if (domain) {
domain.exit();
exited = true;
}
}
if (result === reaction.promise) {
reject(TypeError('Promise-chain cycle'));
} else if (then = isThenable(result)) {
then.call(result, resolve, reject);
} else resolve(result);
} else reject(value);
} catch (error) {
if (domain && !exited) domain.exit();
reject(error);
}
}
state.reactions = [];
state.notified = false;
if (isReject && !state.rejection) onUnhandled(state);
});
};
var dispatchEvent = function (name, promise, reason) {
var event, handler;
if (DISPATCH_EVENT) {
event = document.createEvent('Event');
event.promise = promise;
event.reason = reason;
event.initEvent(name, false, true);
global.dispatchEvent(event);
} else event = { promise: promise, reason: reason };
if (!NATIVE_REJECTION_EVENT && (handler = global['on' + name])) handler(event);
else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);
};
var onUnhandled = function (state) {
task.call(global, function () {
var promise = state.facade;
var value = state.value;
var IS_UNHANDLED = isUnhandled(state);
var result;
if (IS_UNHANDLED) {
result = perform(function () {
if (IS_NODE) {
process.emit('unhandledRejection', value, promise);
} else dispatchEvent(UNHANDLED_REJECTION, promise, value);
});
// Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should
state.rejection = IS_NODE || isUnhandled(state) ? UNHANDLED : HANDLED;
if (result.error) throw result.value;
}
});
};
var isUnhandled = function (state) {
return state.rejection !== HANDLED && !state.parent;
};
var onHandleUnhandled = function (state) {
task.call(global, function () {
var promise = state.facade;
if (IS_NODE) {
process.emit('rejectionHandled', promise);
} else dispatchEvent(REJECTION_HANDLED, promise, state.value);
});
};
var bind = function (fn, state, unwrap) {
return function (value) {
fn(state, value, unwrap);
};
};
var internalReject = function (state, value, unwrap) {
if (state.done) return;
state.done = true;
if (unwrap) state = unwrap;
state.value = value;
state.state = REJECTED;
notify(state, true);
};
var internalResolve = function (state, value, unwrap) {
if (state.done) return;
state.done = true;
if (unwrap) state = unwrap;
try {
if (state.facade === value) throw TypeError("Promise can't be resolved itself");
var then = isThenable(value);
if (then) {
microtask(function () {
var wrapper = { done: false };
try {
then.call(value,
bind(internalResolve, wrapper, state),
bind(internalReject, wrapper, state)
);
} catch (error) {
internalReject(wrapper, error, state);
}
});
} else {
state.value = value;
state.state = FULFILLED;
notify(state, false);
}
} catch (error) {
internalReject({ done: false }, error, state);
}
};
// constructor polyfill
if (FORCED) {
// 25.4.3.1 Promise(executor)
PromiseConstructor = function Promise(executor) {
anInstance(this, PromiseConstructor, PROMISE);
aFunction(executor);
Internal.call(this);
var state = getInternalState(this);
try {
executor(bind(internalResolve, state), bind(internalReject, state));
} catch (error) {
internalReject(state, error);
}
};
// eslint-disable-next-line no-unused-vars
Internal = function Promise(executor) {
setInternalState(this, {
type: PROMISE,
done: false,
notified: false,
parent: false,
reactions: [],
rejection: false,
state: PENDING,
value: undefined
});
};
Internal.prototype = redefineAll(PromiseConstructor.prototype, {
// `Promise.prototype.then` method
// https://tc39.github.io/ecma262/#sec-promise.prototype.then
then: function then(onFulfilled, onRejected) {
var state = getInternalPromiseState(this);
var reaction = newPromiseCapability(speciesConstructor(this, PromiseConstructor));
reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
reaction.fail = typeof onRejected == 'function' && onRejected;
reaction.domain = IS_NODE ? process.domain : undefined;
state.parent = true;
state.reactions.push(reaction);
if (state.state != PENDING) notify(state, false);
return reaction.promise;
},
// `Promise.prototype.catch` method
// https://tc39.github.io/ecma262/#sec-promise.prototype.catch
'catch': function (onRejected) {
return this.then(undefined, onRejected);
}
});
OwnPromiseCapability = function () {
var promise = new Internal();
var state = getInternalState(promise);
this.promise = promise;
this.resolve = bind(internalResolve, state);
this.reject = bind(internalReject, state);
};
newPromiseCapabilityModule.f = newPromiseCapability = function (C) {
return C === PromiseConstructor || C === PromiseWrapper
? new OwnPromiseCapability(C)
: newGenericPromiseCapability(C);
};
if (!IS_PURE && typeof NativePromise == 'function') {
nativeThen = NativePromise.prototype.then;
// wrap native Promise#then for native async functions
redefine(NativePromise.prototype, 'then', function then(onFulfilled, onRejected) {
var that = this;
return new PromiseConstructor(function (resolve, reject) {
nativeThen.call(that, resolve, reject);
}).then(onFulfilled, onRejected);
// https://github.com/zloirock/core-js/issues/640
}, { unsafe: true });
// wrap fetch result
if (typeof $fetch == 'function') $({ global: true, enumerable: true, forced: true }, {
// eslint-disable-next-line no-unused-vars
fetch: function fetch(input /* , init */) {
return promiseResolve(PromiseConstructor, $fetch.apply(global, arguments));
}
});
}
}
$({ global: true, wrap: true, forced: FORCED }, {
Promise: PromiseConstructor
});
setToStringTag(PromiseConstructor, PROMISE, false, true);
setSpecies(PROMISE);
PromiseWrapper = getBuiltIn(PROMISE);
// statics
$({ target: PROMISE, stat: true, forced: FORCED }, {
// `Promise.reject` method
// https://tc39.github.io/ecma262/#sec-promise.reject
reject: function reject(r) {
var capability = newPromiseCapability(this);
capability.reject.call(undefined, r);
return capability.promise;
}
});
$({ target: PROMISE, stat: true, forced: IS_PURE || FORCED }, {
// `Promise.resolve` method
// https://tc39.github.io/ecma262/#sec-promise.resolve
resolve: function resolve(x) {
return promiseResolve(IS_PURE && this === PromiseWrapper ? PromiseConstructor : this, x);
}
});
$({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION }, {
// `Promise.all` method
// https://tc39.github.io/ecma262/#sec-promise.all
all: function all(iterable) {
var C = this;
var capability = newPromiseCapability(C);
var resolve = capability.resolve;
var reject = capability.reject;
var result = perform(function () {
var $promiseResolve = aFunction(C.resolve);
var values = [];
var counter = 0;
var remaining = 1;
iterate(iterable, function (promise) {
var index = counter++;
var alreadyCalled = false;
values.push(undefined);
remaining++;
$promiseResolve.call(C, promise).then(function (value) {
if (alreadyCalled) return;
alreadyCalled = true;
values[index] = value;
--remaining || resolve(values);
}, reject);
});
--remaining || resolve(values);
});
if (result.error) reject(result.value);
return capability.promise;
},
// `Promise.race` method
// https://tc39.github.io/ecma262/#sec-promise.race
race: function race(iterable) {
var C = this;
var capability = newPromiseCapability(C);
var reject = capability.reject;
var result = perform(function () {
var $promiseResolve = aFunction(C.resolve);
iterate(iterable, function (promise) {
$promiseResolve.call(C, promise).then(capability.resolve, reject);
});
});
if (result.error) reject(result.value);
return capability.promise;
}
});