You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 lines
2.4 KiB
1 lines
2.4 KiB
{"ast":null,"code":"import { Observable } from '../Observable';\nimport { isArray } from '../util/isArray';\nimport { isFunction } from '../util/isFunction';\nimport { map } from '../operators/map';\n\nconst toString = (() => Object.prototype.toString)();\n\nexport function fromEvent(target, eventName, options, resultSelector) {\n if (isFunction(options)) {\n resultSelector = options;\n options = undefined;\n }\n\n if (resultSelector) {\n return fromEvent(target, eventName, options).pipe(map(args => isArray(args) ? resultSelector(...args) : resultSelector(args)));\n }\n\n return new Observable(subscriber => {\n function handler(e) {\n if (arguments.length > 1) {\n subscriber.next(Array.prototype.slice.call(arguments));\n } else {\n subscriber.next(e);\n }\n }\n\n setupSubscription(target, eventName, handler, subscriber, options);\n });\n}\n\nfunction setupSubscription(sourceObj, eventName, handler, subscriber, options) {\n let unsubscribe;\n\n if (isEventTarget(sourceObj)) {\n const source = sourceObj;\n sourceObj.addEventListener(eventName, handler, options);\n\n unsubscribe = () => source.removeEventListener(eventName, handler, options);\n } else if (isJQueryStyleEventEmitter(sourceObj)) {\n const source = sourceObj;\n sourceObj.on(eventName, handler);\n\n unsubscribe = () => source.off(eventName, handler);\n } else if (isNodeStyleEventEmitter(sourceObj)) {\n const source = sourceObj;\n sourceObj.addListener(eventName, handler);\n\n unsubscribe = () => source.removeListener(eventName, handler);\n } else if (sourceObj && sourceObj.length) {\n for (let i = 0, len = sourceObj.length; i < len; i++) {\n setupSubscription(sourceObj[i], eventName, handler, subscriber, options);\n }\n } else {\n throw new TypeError('Invalid event target');\n }\n\n subscriber.add(unsubscribe);\n}\n\nfunction isNodeStyleEventEmitter(sourceObj) {\n return sourceObj && typeof sourceObj.addListener === 'function' && typeof sourceObj.removeListener === 'function';\n}\n\nfunction isJQueryStyleEventEmitter(sourceObj) {\n return sourceObj && typeof sourceObj.on === 'function' && typeof sourceObj.off === 'function';\n}\n\nfunction isEventTarget(sourceObj) {\n return sourceObj && typeof sourceObj.addEventListener === 'function' && typeof sourceObj.removeEventListener === 'function';\n} //# sourceMappingURL=fromEvent.js.map","map":null,"metadata":{},"sourceType":"module"}
|