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33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
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/** PURE_IMPORTS_START _Observable,_util_isArray,_util_isFunction,_operators_map PURE_IMPORTS_END */
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import { Observable } from '../Observable';
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import { isArray } from '../util/isArray';
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import { isFunction } from '../util/isFunction';
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import { map } from '../operators/map';
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export function fromEventPattern(addHandler, removeHandler, resultSelector) {
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if (resultSelector) {
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return fromEventPattern(addHandler, removeHandler).pipe(map(function (args) { return isArray(args) ? resultSelector.apply(void 0, args) : resultSelector(args); }));
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}
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return new Observable(function (subscriber) {
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var handler = function () {
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var e = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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e[_i] = arguments[_i];
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}
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return subscriber.next(e.length === 1 ? e[0] : e);
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};
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var retValue;
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try {
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retValue = addHandler(handler);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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if (!isFunction(removeHandler)) {
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return undefined;
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}
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return function () { return removeHandler(handler, retValue); };
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});
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}
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//# sourceMappingURL=fromEventPattern.js.map
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