initial commit: scaffolding

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diff --git a/node_modules/rxjs/dist/esm/internal/testing/TestScheduler.js b/node_modules/rxjs/dist/esm/internal/testing/TestScheduler.js
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+import { Observable } from '../Observable';
+import { ColdObservable } from './ColdObservable';
+import { HotObservable } from './HotObservable';
+import { SubscriptionLog } from './SubscriptionLog';
+import { VirtualTimeScheduler, VirtualAction } from '../scheduler/VirtualTimeScheduler';
+import { COMPLETE_NOTIFICATION, errorNotification, nextNotification } from '../NotificationFactories';
+import { dateTimestampProvider } from '../scheduler/dateTimestampProvider';
+import { performanceTimestampProvider } from '../scheduler/performanceTimestampProvider';
+import { animationFrameProvider } from '../scheduler/animationFrameProvider';
+import { immediateProvider } from '../scheduler/immediateProvider';
+import { intervalProvider } from '../scheduler/intervalProvider';
+import { timeoutProvider } from '../scheduler/timeoutProvider';
+const defaultMaxFrame = 750;
+export class TestScheduler extends VirtualTimeScheduler {
+    constructor(assertDeepEqual) {
+        super(VirtualAction, defaultMaxFrame);
+        this.assertDeepEqual = assertDeepEqual;
+        this.hotObservables = [];
+        this.coldObservables = [];
+        this.flushTests = [];
+        this.runMode = false;
+    }
+    createTime(marbles) {
+        const indexOf = this.runMode ? marbles.trim().indexOf('|') : marbles.indexOf('|');
+        if (indexOf === -1) {
+            throw new Error('marble diagram for time should have a completion marker "|"');
+        }
+        return indexOf * TestScheduler.frameTimeFactor;
+    }
+    createColdObservable(marbles, values, error) {
+        if (marbles.indexOf('^') !== -1) {
+            throw new Error('cold observable cannot have subscription offset "^"');
+        }
+        if (marbles.indexOf('!') !== -1) {
+            throw new Error('cold observable cannot have unsubscription marker "!"');
+        }
+        const messages = TestScheduler.parseMarbles(marbles, values, error, undefined, this.runMode);
+        const cold = new ColdObservable(messages, this);
+        this.coldObservables.push(cold);
+        return cold;
+    }
+    createHotObservable(marbles, values, error) {
+        if (marbles.indexOf('!') !== -1) {
+            throw new Error('hot observable cannot have unsubscription marker "!"');
+        }
+        const messages = TestScheduler.parseMarbles(marbles, values, error, undefined, this.runMode);
+        const subject = new HotObservable(messages, this);
+        this.hotObservables.push(subject);
+        return subject;
+    }
+    materializeInnerObservable(observable, outerFrame) {
+        const messages = [];
+        observable.subscribe({
+            next: (value) => {
+                messages.push({ frame: this.frame - outerFrame, notification: nextNotification(value) });
+            },
+            error: (error) => {
+                messages.push({ frame: this.frame - outerFrame, notification: errorNotification(error) });
+            },
+            complete: () => {
+                messages.push({ frame: this.frame - outerFrame, notification: COMPLETE_NOTIFICATION });
+            },
+        });
+        return messages;
+    }
+    expectObservable(observable, subscriptionMarbles = null) {
+        const actual = [];
+        const flushTest = { actual, ready: false };
+        const subscriptionParsed = TestScheduler.parseMarblesAsSubscriptions(subscriptionMarbles, this.runMode);
+        const subscriptionFrame = subscriptionParsed.subscribedFrame === Infinity ? 0 : subscriptionParsed.subscribedFrame;
+        const unsubscriptionFrame = subscriptionParsed.unsubscribedFrame;
+        let subscription;
+        this.schedule(() => {
+            subscription = observable.subscribe({
+                next: (x) => {
+                    const value = x instanceof Observable ? this.materializeInnerObservable(x, this.frame) : x;
+                    actual.push({ frame: this.frame, notification: nextNotification(value) });
+                },
+                error: (error) => {
+                    actual.push({ frame: this.frame, notification: errorNotification(error) });
+                },
+                complete: () => {
+                    actual.push({ frame: this.frame, notification: COMPLETE_NOTIFICATION });
+                },
+            });
+        }, subscriptionFrame);
+        if (unsubscriptionFrame !== Infinity) {
+            this.schedule(() => subscription.unsubscribe(), unsubscriptionFrame);
+        }
+        this.flushTests.push(flushTest);
+        const { runMode } = this;
+        return {
+            toBe(marbles, values, errorValue) {
+                flushTest.ready = true;
+                flushTest.expected = TestScheduler.parseMarbles(marbles, values, errorValue, true, runMode);
+            },
+            toEqual: (other) => {
+                flushTest.ready = true;
+                flushTest.expected = [];
+                this.schedule(() => {
+                    subscription = other.subscribe({
+                        next: (x) => {
+                            const value = x instanceof Observable ? this.materializeInnerObservable(x, this.frame) : x;
+                            flushTest.expected.push({ frame: this.frame, notification: nextNotification(value) });
+                        },
+                        error: (error) => {
+                            flushTest.expected.push({ frame: this.frame, notification: errorNotification(error) });
+                        },
+                        complete: () => {
+                            flushTest.expected.push({ frame: this.frame, notification: COMPLETE_NOTIFICATION });
+                        },
+                    });
+                }, subscriptionFrame);
+            },
+        };
+    }
+    expectSubscriptions(actualSubscriptionLogs) {
+        const flushTest = { actual: actualSubscriptionLogs, ready: false };
+        this.flushTests.push(flushTest);
+        const { runMode } = this;
+        return {
+            toBe(marblesOrMarblesArray) {
+                const marblesArray = typeof marblesOrMarblesArray === 'string' ? [marblesOrMarblesArray] : marblesOrMarblesArray;
+                flushTest.ready = true;
+                flushTest.expected = marblesArray
+                    .map((marbles) => TestScheduler.parseMarblesAsSubscriptions(marbles, runMode))
+                    .filter((marbles) => marbles.subscribedFrame !== Infinity);
+            },
+        };
+    }
+    flush() {
+        const hotObservables = this.hotObservables;
+        while (hotObservables.length > 0) {
+            hotObservables.shift().setup();
+        }
+        super.flush();
+        this.flushTests = this.flushTests.filter((test) => {
+            if (test.ready) {
+                this.assertDeepEqual(test.actual, test.expected);
+                return false;
+            }
+            return true;
+        });
+    }
+    static parseMarblesAsSubscriptions(marbles, runMode = false) {
+        if (typeof marbles !== 'string') {
+            return new SubscriptionLog(Infinity);
+        }
+        const characters = [...marbles];
+        const len = characters.length;
+        let groupStart = -1;
+        let subscriptionFrame = Infinity;
+        let unsubscriptionFrame = Infinity;
+        let frame = 0;
+        for (let i = 0; i < len; i++) {
+            let nextFrame = frame;
+            const advanceFrameBy = (count) => {
+                nextFrame += count * this.frameTimeFactor;
+            };
+            const c = characters[i];
+            switch (c) {
+                case ' ':
+                    if (!runMode) {
+                        advanceFrameBy(1);
+                    }
+                    break;
+                case '-':
+                    advanceFrameBy(1);
+                    break;
+                case '(':
+                    groupStart = frame;
+                    advanceFrameBy(1);
+                    break;
+                case ')':
+                    groupStart = -1;
+                    advanceFrameBy(1);
+                    break;
+                case '^':
+                    if (subscriptionFrame !== Infinity) {
+                        throw new Error("found a second subscription point '^' in a " + 'subscription marble diagram. There can only be one.');
+                    }
+                    subscriptionFrame = groupStart > -1 ? groupStart : frame;
+                    advanceFrameBy(1);
+                    break;
+                case '!':
+                    if (unsubscriptionFrame !== Infinity) {
+                        throw new Error("found a second unsubscription point '!' in a " + 'subscription marble diagram. There can only be one.');
+                    }
+                    unsubscriptionFrame = groupStart > -1 ? groupStart : frame;
+                    break;
+                default:
+                    if (runMode && c.match(/^[0-9]$/)) {
+                        if (i === 0 || characters[i - 1] === ' ') {
+                            const buffer = characters.slice(i).join('');
+                            const match = buffer.match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);
+                            if (match) {
+                                i += match[0].length - 1;
+                                const duration = parseFloat(match[1]);
+                                const unit = match[2];
+                                let durationInMs;
+                                switch (unit) {
+                                    case 'ms':
+                                        durationInMs = duration;
+                                        break;
+                                    case 's':
+                                        durationInMs = duration * 1000;
+                                        break;
+                                    case 'm':
+                                        durationInMs = duration * 1000 * 60;
+                                        break;
+                                    default:
+                                        break;
+                                }
+                                advanceFrameBy(durationInMs / this.frameTimeFactor);
+                                break;
+                            }
+                        }
+                    }
+                    throw new Error("there can only be '^' and '!' markers in a " + "subscription marble diagram. Found instead '" + c + "'.");
+            }
+            frame = nextFrame;
+        }
+        if (unsubscriptionFrame < 0) {
+            return new SubscriptionLog(subscriptionFrame);
+        }
+        else {
+            return new SubscriptionLog(subscriptionFrame, unsubscriptionFrame);
+        }
+    }
+    static parseMarbles(marbles, values, errorValue, materializeInnerObservables = false, runMode = false) {
+        if (marbles.indexOf('!') !== -1) {
+            throw new Error('conventional marble diagrams cannot have the ' + 'unsubscription marker "!"');
+        }
+        const characters = [...marbles];
+        const len = characters.length;
+        const testMessages = [];
+        const subIndex = runMode ? marbles.replace(/^[ ]+/, '').indexOf('^') : marbles.indexOf('^');
+        let frame = subIndex === -1 ? 0 : subIndex * -this.frameTimeFactor;
+        const getValue = typeof values !== 'object'
+            ? (x) => x
+            : (x) => {
+                if (materializeInnerObservables && values[x] instanceof ColdObservable) {
+                    return values[x].messages;
+                }
+                return values[x];
+            };
+        let groupStart = -1;
+        for (let i = 0; i < len; i++) {
+            let nextFrame = frame;
+            const advanceFrameBy = (count) => {
+                nextFrame += count * this.frameTimeFactor;
+            };
+            let notification;
+            const c = characters[i];
+            switch (c) {
+                case ' ':
+                    if (!runMode) {
+                        advanceFrameBy(1);
+                    }
+                    break;
+                case '-':
+                    advanceFrameBy(1);
+                    break;
+                case '(':
+                    groupStart = frame;
+                    advanceFrameBy(1);
+                    break;
+                case ')':
+                    groupStart = -1;
+                    advanceFrameBy(1);
+                    break;
+                case '|':
+                    notification = COMPLETE_NOTIFICATION;
+                    advanceFrameBy(1);
+                    break;
+                case '^':
+                    advanceFrameBy(1);
+                    break;
+                case '#':
+                    notification = errorNotification(errorValue || 'error');
+                    advanceFrameBy(1);
+                    break;
+                default:
+                    if (runMode && c.match(/^[0-9]$/)) {
+                        if (i === 0 || characters[i - 1] === ' ') {
+                            const buffer = characters.slice(i).join('');
+                            const match = buffer.match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);
+                            if (match) {
+                                i += match[0].length - 1;
+                                const duration = parseFloat(match[1]);
+                                const unit = match[2];
+                                let durationInMs;
+                                switch (unit) {
+                                    case 'ms':
+                                        durationInMs = duration;
+                                        break;
+                                    case 's':
+                                        durationInMs = duration * 1000;
+                                        break;
+                                    case 'm':
+                                        durationInMs = duration * 1000 * 60;
+                                        break;
+                                    default:
+                                        break;
+                                }
+                                advanceFrameBy(durationInMs / this.frameTimeFactor);
+                                break;
+                            }
+                        }
+                    }
+                    notification = nextNotification(getValue(c));
+                    advanceFrameBy(1);
+                    break;
+            }
+            if (notification) {
+                testMessages.push({ frame: groupStart > -1 ? groupStart : frame, notification });
+            }
+            frame = nextFrame;
+        }
+        return testMessages;
+    }
+    createAnimator() {
+        if (!this.runMode) {
+            throw new Error('animate() must only be used in run mode');
+        }
+        let lastHandle = 0;
+        let map;
+        const delegate = {
+            requestAnimationFrame(callback) {
+                if (!map) {
+                    throw new Error('animate() was not called within run()');
+                }
+                const handle = ++lastHandle;
+                map.set(handle, callback);
+                return handle;
+            },
+            cancelAnimationFrame(handle) {
+                if (!map) {
+                    throw new Error('animate() was not called within run()');
+                }
+                map.delete(handle);
+            },
+        };
+        const animate = (marbles) => {
+            if (map) {
+                throw new Error('animate() must not be called more than once within run()');
+            }
+            if (/[|#]/.test(marbles)) {
+                throw new Error('animate() must not complete or error');
+            }
+            map = new Map();
+            const messages = TestScheduler.parseMarbles(marbles, undefined, undefined, undefined, true);
+            for (const message of messages) {
+                this.schedule(() => {
+                    const now = this.now();
+                    const callbacks = Array.from(map.values());
+                    map.clear();
+                    for (const callback of callbacks) {
+                        callback(now);
+                    }
+                }, message.frame);
+            }
+        };
+        return { animate, delegate };
+    }
+    createDelegates() {
+        let lastHandle = 0;
+        const scheduleLookup = new Map();
+        const run = () => {
+            const now = this.now();
+            const scheduledRecords = Array.from(scheduleLookup.values());
+            const scheduledRecordsDue = scheduledRecords.filter(({ due }) => due <= now);
+            const dueImmediates = scheduledRecordsDue.filter(({ type }) => type === 'immediate');
+            if (dueImmediates.length > 0) {
+                const { handle, handler } = dueImmediates[0];
+                scheduleLookup.delete(handle);
+                handler();
+                return;
+            }
+            const dueIntervals = scheduledRecordsDue.filter(({ type }) => type === 'interval');
+            if (dueIntervals.length > 0) {
+                const firstDueInterval = dueIntervals[0];
+                const { duration, handler } = firstDueInterval;
+                firstDueInterval.due = now + duration;
+                firstDueInterval.subscription = this.schedule(run, duration);
+                handler();
+                return;
+            }
+            const dueTimeouts = scheduledRecordsDue.filter(({ type }) => type === 'timeout');
+            if (dueTimeouts.length > 0) {
+                const { handle, handler } = dueTimeouts[0];
+                scheduleLookup.delete(handle);
+                handler();
+                return;
+            }
+            throw new Error('Expected a due immediate or interval');
+        };
+        const immediate = {
+            setImmediate: (handler) => {
+                const handle = ++lastHandle;
+                scheduleLookup.set(handle, {
+                    due: this.now(),
+                    duration: 0,
+                    handle,
+                    handler,
+                    subscription: this.schedule(run, 0),
+                    type: 'immediate',
+                });
+                return handle;
+            },
+            clearImmediate: (handle) => {
+                const value = scheduleLookup.get(handle);
+                if (value) {
+                    value.subscription.unsubscribe();
+                    scheduleLookup.delete(handle);
+                }
+            },
+        };
+        const interval = {
+            setInterval: (handler, duration = 0) => {
+                const handle = ++lastHandle;
+                scheduleLookup.set(handle, {
+                    due: this.now() + duration,
+                    duration,
+                    handle,
+                    handler,
+                    subscription: this.schedule(run, duration),
+                    type: 'interval',
+                });
+                return handle;
+            },
+            clearInterval: (handle) => {
+                const value = scheduleLookup.get(handle);
+                if (value) {
+                    value.subscription.unsubscribe();
+                    scheduleLookup.delete(handle);
+                }
+            },
+        };
+        const timeout = {
+            setTimeout: (handler, duration = 0) => {
+                const handle = ++lastHandle;
+                scheduleLookup.set(handle, {
+                    due: this.now() + duration,
+                    duration,
+                    handle,
+                    handler,
+                    subscription: this.schedule(run, duration),
+                    type: 'timeout',
+                });
+                return handle;
+            },
+            clearTimeout: (handle) => {
+                const value = scheduleLookup.get(handle);
+                if (value) {
+                    value.subscription.unsubscribe();
+                    scheduleLookup.delete(handle);
+                }
+            },
+        };
+        return { immediate, interval, timeout };
+    }
+    run(callback) {
+        const prevFrameTimeFactor = TestScheduler.frameTimeFactor;
+        const prevMaxFrames = this.maxFrames;
+        TestScheduler.frameTimeFactor = 1;
+        this.maxFrames = Infinity;
+        this.runMode = true;
+        const animator = this.createAnimator();
+        const delegates = this.createDelegates();
+        animationFrameProvider.delegate = animator.delegate;
+        dateTimestampProvider.delegate = this;
+        immediateProvider.delegate = delegates.immediate;
+        intervalProvider.delegate = delegates.interval;
+        timeoutProvider.delegate = delegates.timeout;
+        performanceTimestampProvider.delegate = this;
+        const helpers = {
+            cold: this.createColdObservable.bind(this),
+            hot: this.createHotObservable.bind(this),
+            flush: this.flush.bind(this),
+            time: this.createTime.bind(this),
+            expectObservable: this.expectObservable.bind(this),
+            expectSubscriptions: this.expectSubscriptions.bind(this),
+            animate: animator.animate,
+        };
+        try {
+            const ret = callback(helpers);
+            this.flush();
+            return ret;
+        }
+        finally {
+            TestScheduler.frameTimeFactor = prevFrameTimeFactor;
+            this.maxFrames = prevMaxFrames;
+            this.runMode = false;
+            animationFrameProvider.delegate = undefined;
+            dateTimestampProvider.delegate = undefined;
+            immediateProvider.delegate = undefined;
+            intervalProvider.delegate = undefined;
+            timeoutProvider.delegate = undefined;
+            performanceTimestampProvider.delegate = undefined;
+        }
+    }
+}
+TestScheduler.frameTimeFactor = 10;
+//# sourceMappingURL=TestScheduler.js.map
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