om/node_modules/rxjs/internal/observable/from.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var Observable_1 = require("../Observable");
var isPromise_1 = require("../util/isPromise");
var isArrayLike_1 = require("../util/isArrayLike");
var isInteropObservable_1 = require("../util/isInteropObservable");
var isIterable_1 = require("../util/isIterable");
var fromArray_1 = require("./fromArray");
var fromPromise_1 = require("./fromPromise");
var fromIterable_1 = require("./fromIterable");
var fromObservable_1 = require("./fromObservable");
var subscribeTo_1 = require("../util/subscribeTo");
function from(input, scheduler) {
    if (!scheduler) {
        if (input instanceof Observable_1.Observable) {
            return input;
        }
        return new Observable_1.Observable(subscribeTo_1.subscribeTo(input));
    }
    if (input != null) {
        if (isInteropObservable_1.isInteropObservable(input)) {
            return fromObservable_1.fromObservable(input, scheduler);
        }
        else if (isPromise_1.isPromise(input)) {
            return fromPromise_1.fromPromise(input, scheduler);
        }
        else if (isArrayLike_1.isArrayLike(input)) {
            return fromArray_1.fromArray(input, scheduler);
        }
        else if (isIterable_1.isIterable(input) || typeof input === 'string') {
            return fromIterable_1.fromIterable(input, scheduler);
        }
    }
    throw new TypeError((input !== null && typeof input || input) + ' is not observable');
}
exports.from = from;
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