		@@ -38,257 +38,254 @@ /**

		/// <reference path='../../dist/immutable.d.ts'/>
		import * as Immutable from '../../';

		declare module __Cursor {
		export function from(
		collection: Immutable.Collection<any, any>,
		onChange?: (newValue: any, oldValue?: any, keyPath?: Array<any>) => any
		): Cursor;
		export function from(
		collection: Immutable.Collection<any, any>,
		keyPath: Array<any>,
		onChange?: (newValue: any, oldValue?: any, keyPath?: Array<any>) => any
		): Cursor;
		export function from(
		collection: Immutable.Collection<any, any>,
		key: any,
		onChange?: (newValue: any, oldValue?: any, keyPath?: Array<any>) => any
		): Cursor;

		export function from(
		collection: Immutable.Collection<any, any>,
		onChange?: (newValue: any, oldValue?: any, keyPath?: Array<any>) => any
		): Cursor;
		export function from(
		collection: Immutable.Collection<any, any>,
		keyPath: Array<any>,
		onChange?: (newValue: any, oldValue?: any, keyPath?: Array<any>) => any
		): Cursor;
		export function from(
		collection: Immutable.Collection<any, any>,
		key: any,
		onChange?: (newValue: any, oldValue?: any, keyPath?: Array<any>) => any
		): Cursor;

		export interface Cursor extends Immutable.Iterable<any, any>, Immutable.Seq<any, any> {

		export interface Cursor extends Immutable.Seq<any, any> {
		/**
		* Returns a sub-cursor following the key-path starting from this cursor.
		*/
		cursor(subKeyPath: Array<any>): Cursor;
		cursor(subKey: any): Cursor;

		/**
		* Returns a sub-cursor following the key-path starting from this cursor.
		*/
		cursor(subKeyPath: Array<any>): Cursor;
		cursor(subKey: any): Cursor;
		/**
		* Returns the value at the cursor, if the cursor path does not yet exist,
		* returns `notSetValue`.
		*/
		deref(notSetValue?: any): any;

		/**
		* Returns the value at the cursor, if the cursor path does not yet exist,
		* returns `notSetValue`.
		*/
		deref(notSetValue?: any): any;
		/**
		* Returns the value at the `key` in the cursor, or `notSetValue` if it
		* does not exist.
		*
		* If the key would return a collection, a new Cursor is returned.
		*/
		get(key: any, notSetValue?: any): any;

		/**
		* Returns the value at the `key` in the cursor, or `notSetValue` if it
		* does not exist.
		*
		* If the key would return a collection, a new Cursor is returned.
		*/
		get(key: any, notSetValue?: any): any;
		/**
		* Returns the value at the `keyPath` in the cursor, or `notSetValue` if it
		* does not exist.
		*
		* If the keyPath would return a collection, a new Cursor is returned.
		*/
		getIn(keyPath: Array<any>, notSetValue?: any): any;
		getIn(keyPath: Immutable.Iterable<any, any>, notSetValue?: any): any;

		/**
		* Returns the value at the `keyPath` in the cursor, or `notSetValue` if it
		* does not exist.
		*
		* If the keyPath would return a collection, a new Cursor is returned.
		*/
		getIn(keyPath: Array<any>, notSetValue?: any): any;
		getIn(keyPath: Immutable.Iterable<any, any>, notSetValue?: any): any;
		/**
		* Sets `value` at `key` in the cursor, returning a new cursor to the same
		* point in the new data.
		*
		* If only one parameter is provided, it is set directly as the cursor's value.
		*/
		set(key: any, value: any): Cursor;
		set(value: any): Cursor;

		/**
		* Sets `value` at `key` in the cursor, returning a new cursor to the same
		* point in the new data.
		*
		* If only one parameter is provided, it is set directly as the cursor's value.
		*/
		set(key: any, value: any): Cursor;
		set(value: any): Cursor;
		/**
		* Deletes `key` from the cursor, returning a new cursor to the same
		* point in the new data.
		*
		* Note: `delete` cannot be safely used in IE8
		* @alias remove
		*/
		delete(key: any): Cursor;
		remove(key: any): Cursor;

		/**
		* Deletes `key` from the cursor, returning a new cursor to the same
		* point in the new data.
		*
		* Note: `delete` cannot be safely used in IE8
		* @alias remove
		*/
		delete(key: any): Cursor;
		remove(key: any): Cursor;
		/**
		* Clears the value at this cursor, returning a new cursor to the same
		* point in the new data.
		*/
		clear(): Cursor;

		/**
		* Clears the value at this cursor, returning a new cursor to the same
		* point in the new data.
		*/
		clear(): Cursor;
		/**
		* Updates the value in the data this cursor points to, triggering the
		* callback for the root cursor and returning a new cursor pointing to the
		* new data.
		*/
		update(updater: (value: any) => any): Cursor;
		update(key: any, updater: (value: any) => any): Cursor;
		update(key: any, notSetValue: any, updater: (value: any) => any): Cursor;

		/**
		* Updates the value in the data this cursor points to, triggering the
		* callback for the root cursor and returning a new cursor pointing to the
		* new data.
		*/
		update(updater: (value: any) => any): Cursor;
		update(key: any, updater: (value: any) => any): Cursor;
		update(key: any, notSetValue: any, updater: (value: any) => any): Cursor;
		/**
		* @see `Map#merge`
		*/
		merge(...iterables: Immutable.Iterable<any, any>[]): Cursor;
		merge(...iterables: {[key: string]: any}[]): Cursor;

		/**
		* @see `Map#merge`
		*/
		merge(...iterables: Immutable.Iterable<any, any>[]): Cursor;
		merge(...iterables: {[key: string]: any}[]): Cursor;
		/**
		* @see `Map#mergeWith`
		*/
		mergeWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: {[key: string]: any}[]
		): Cursor;

		/**
		* @see `Map#mergeWith`
		*/
		mergeWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: {[key: string]: any}[]
		): Cursor;
		/**
		* @see `Map#mergeDeep`
		*/
		mergeDeep(...iterables: Immutable.Iterable<any, any>[]): Cursor;
		mergeDeep(...iterables: {[key: string]: any}[]): Cursor;

		/**
		* @see `Map#mergeDeep`
		*/
		mergeDeep(...iterables: Immutable.Iterable<any, any>[]): Cursor;
		mergeDeep(...iterables: {[key: string]: any}[]): Cursor;
		/**
		* @see `Map#mergeDeepWith`
		*/
		mergeDeepWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeDeepWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: {[key: string]: any}[]
		): Cursor;

		/**
		* @see `Map#mergeDeepWith`
		*/
		mergeDeepWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeDeepWith(
		merger: (previous?: any, next?: any) => any,
		...iterables: {[key: string]: any}[]
		): Cursor;
		// Deep persistent changes

		// Deep persistent changes
		/**
		* Returns a new Cursor having set `value` at this `keyPath`. If any keys in
		* `keyPath` do not exist, a new immutable Map will be created at that key.
		*/
		setIn(keyPath: Array<any>, value: any): Cursor;
		setIn(keyPath: Immutable.Iterable<any, any>, value: any): Cursor;

		/**
		* Returns a new Cursor having set `value` at this `keyPath`. If any keys in
		* `keyPath` do not exist, a new immutable Map will be created at that key.
		*/
		setIn(keyPath: Array<any>, value: any): Cursor;
		setIn(keyPath: Immutable.Iterable<any, any>, value: any): Cursor;
		/**
		* Returns a new Cursor with provided `values` appended
		*/
		push(...values: Array<any>): Cursor;

		/**
		* Returns a new Cursor with provided `values` appended
		*/
		push(...values: Array<any>): Cursor;
		/**
		* Returns a new Cursor with a size ones less than this Cursor,
		* excluding the last index in this Cursor.
		*/
		pop(): Cursor;

		/**
		* Returns a new Cursor with a size ones less than this Cursor,
		* excluding the last index in this Cursor.
		*/
		pop(): Cursor;
		/**
		* Returns a new Cursor with the provided `values` prepended,
		* shifting other values ahead to higher indices.
		*/
		unshift(...values: Array<any>): Cursor;

		/**
		* Returns a new Cursor with the provided `values` prepended,
		* shifting other values ahead to higher indices.
		*/
		unshift(...values: Array<any>): Cursor;
		/**
		* Returns a new Cursor with a size ones less than this Cursor, excluding
		* the first index in this Cursor, shifting all other values to a lower index.
		*/
		shift(): Cursor;

		/**
		* Returns a new Cursor with a size ones less than this Cursor, excluding
		* the first index in this Cursor, shifting all other values to a lower index.
		*/
		shift(): Cursor;
		/**
		* Returns a new Cursor having removed the value at this `keyPath`.
		*
		* @alias removeIn
		*/
		deleteIn(keyPath: Array<any>): Cursor;
		deleteIn(keyPath: Immutable.Iterable<any, any>): Cursor;
		removeIn(keyPath: Array<any>): Cursor;
		removeIn(keyPath: Immutable.Iterable<any, any>): Cursor;

		/**
		* Returns a new Cursor having removed the value at this `keyPath`.
		*
		* @alias removeIn
		*/
		deleteIn(keyPath: Array<any>): Cursor;
		deleteIn(keyPath: Immutable.Iterable<any, any>): Cursor;
		removeIn(keyPath: Array<any>): Cursor;
		removeIn(keyPath: Immutable.Iterable<any, any>): Cursor;
		/**
		* Returns a new Cursor having applied the `updater` to the value found at
		* the keyPath.
		*
		* If any keys in `keyPath` do not exist, new Immutable `Map`s will
		* be created at those keys. If the `keyPath` does not already contain a
		* value, the `updater` function will be called with `notSetValue`, if
		* provided, otherwise `undefined`.
		*
		* If the `updater` function returns the same value it was called with, then
		* no change will occur. This is still true if `notSetValue` is provided.
		*/
		updateIn(
		keyPath: Array<any>,
		updater: (value: any) => any
		): Cursor;
		updateIn(
		keyPath: Array<any>,
		notSetValue: any,
		updater: (value: any) => any
		): Cursor;
		updateIn(
		keyPath: Immutable.Iterable<any, any>,
		updater: (value: any) => any
		): Cursor;
		updateIn(
		keyPath: Immutable.Iterable<any, any>,
		notSetValue: any,
		updater: (value: any) => any
		): Cursor;

		/**
		* Returns a new Cursor having applied the `updater` to the value found at
		* the keyPath.
		*
		* If any keys in `keyPath` do not exist, new Immutable `Map`s will
		* be created at those keys. If the `keyPath` does not already contain a
		* value, the `updater` function will be called with `notSetValue`, if
		* provided, otherwise `undefined`.
		*
		* If the `updater` function returns the same value it was called with, then
		* no change will occur. This is still true if `notSetValue` is provided.
		*/
		updateIn(
		keyPath: Array<any>,
		updater: (value: any) => any
		): Cursor;
		updateIn(
		keyPath: Array<any>,
		notSetValue: any,
		updater: (value: any) => any
		): Cursor;
		updateIn(
		keyPath: Immutable.Iterable<any, any>,
		updater: (value: any) => any
		): Cursor;
		updateIn(
		keyPath: Immutable.Iterable<any, any>,
		notSetValue: any,
		updater: (value: any) => any
		): Cursor;
		/**
		* A combination of `updateIn` and `merge`, returning a new Cursor, but
		* performing the merge at a point arrived at by following the keyPath.
		* In other words, these two lines are equivalent:
		*
		* x.updateIn(['a', 'b', 'c'], abc => abc.merge(y));
		* x.mergeIn(['a', 'b', 'c'], y);
		*
		*/
		mergeIn(
		keyPath: Immutable.Iterable<any, any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeIn(
		keyPath: Array<any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeIn(
		keyPath: Array<any>,
		...iterables: {[key: string]: any}[]
		): Cursor;

		/**
		* A combination of `updateIn` and `merge`, returning a new Cursor, but
		* performing the merge at a point arrived at by following the keyPath.
		* In other words, these two lines are equivalent:
		*
		* x.updateIn(['a', 'b', 'c'], abc => abc.merge(y));
		* x.mergeIn(['a', 'b', 'c'], y);
		*
		*/
		mergeIn(
		keyPath: Immutable.Iterable<any, any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeIn(
		keyPath: Array<any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeIn(
		keyPath: Array<any>,
		...iterables: {[key: string]: any}[]
		): Cursor;
		/**
		* A combination of `updateIn` and `mergeDeep`, returning a new Cursor, but
		* performing the deep merge at a point arrived at by following the keyPath.
		* In other words, these two lines are equivalent:
		*
		* x.updateIn(['a', 'b', 'c'], abc => abc.mergeDeep(y));
		* x.mergeDeepIn(['a', 'b', 'c'], y);
		*
		*/
		mergeDeepIn(
		keyPath: Immutable.Iterable<any, any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeDeepIn(
		keyPath: Array<any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeDeepIn(
		keyPath: Array<any>,
		...iterables: {[key: string]: any}[]
		): Cursor;

		/**
		* A combination of `updateIn` and `mergeDeep`, returning a new Cursor, but
		* performing the deep merge at a point arrived at by following the keyPath.
		* In other words, these two lines are equivalent:
		*
		* x.updateIn(['a', 'b', 'c'], abc => abc.mergeDeep(y));
		* x.mergeDeepIn(['a', 'b', 'c'], y);
		*
		*/
		mergeDeepIn(
		keyPath: Immutable.Iterable<any, any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeDeepIn(
		keyPath: Array<any>,
		...iterables: Immutable.Iterable<any, any>[]
		): Cursor;
		mergeDeepIn(
		keyPath: Array<any>,
		...iterables: {[key: string]: any}[]
		): Cursor;
		// Transient changes

		// Transient changes
		/**
		* Every time you call one of the above functions, a new immutable value is
		* created and the callback is triggered. If you need to apply a series of
		* mutations to a Cursor without triggering the callback repeatedly,
		* `withMutations()` creates a temporary mutable copy of the value which
		* can apply mutations in a highly performant manner. Afterwards the
		* callback is triggered with the final value.
		*/
		withMutations(mutator: (mutable: any) => any): Cursor;

		/**
		* Every time you call one of the above functions, a new immutable value is
		* created and the callback is triggered. If you need to apply a series of
		* mutations to a Cursor without triggering the callback repeatedly,
		* `withMutations()` creates a temporary mutable copy of the value which
		* can apply mutations in a highly performant manner. Afterwards the
		* callback is triggered with the final value.
		*/
		withMutations(mutator: (mutable: any) => any): Cursor;
		}

		/**
		* @ignore
		*/
		map(fn: (v: any, k: any, c: this) => any): this;
		}

		declare module 'immutable/contrib/cursor' {
		export = __Cursor
		}

contrib/cursor/index.js

		@@ -11,2 +11,21 @@ /**
		/**
		* DEPRECATED
		*
		* The Cursor API is deprecated and will be removed in a future major release.
		*
		* It is strongly suggested that you use the excellent `immutable-cursor` module
		* which has an extremely similar API but is much higher quality.
		*
		* https://github.com/redbadger/immutable-cursor
		*/
		typeof console === 'object' && console.warn && console.warn(
		'The Cursor API is deprecated and will be removed in a future major release.\n' +
		'\n' +
		'It is strongly suggested that you use the excellent `immutable-cursor` module\n' +
		'which has an extremely similar API but is much higher quality.\n' +
		'\n' +
		'https://github.com/redbadger/immutable-cursor\n' +
		);

		/**
		* Cursor is expected to be required in a node or other CommonJS context:
		@@ -13,0 +32,0 @@ *

contrib/cursor/README.md

		@@ -0,1 +1,11 @@
		# DEPRECATED

		The Cursor API is deprecated and will be removed in a future major release.

		It is strongly suggested that you use the excellent `immutable-cursor` module
		which has an extremely similar API but is much higher quality.

		https://github.com/redbadger/immutable-cursor


		Cursors
		@@ -11,3 +21,3 @@ -------
		This is particularly useful when used in conjuction with component-based UI
		libraries like [React](http://facebook.github.io/react/) or to simulate
		libraries like [React](https://facebook.github.io/react/) or to simulate
		"state" throughout an application while maintaining a single flow of logic.
		@@ -14,0 +24,0 @@

dist/immutable.min.js

		@@ -9,29 +9,32 @@ /**
		*/
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116

package.json

		{
		"name": "immutable",
		"version": "3.8.1",
		"version": "4.0.0-rc.1",
		"description": "Immutable Data Collections",
		@@ -23,71 +23,81 @@ "homepage": "https://facebook.github.com/immutable-js",
		"scripts": {
		"build": "grunt default && gulp default",
		"lint": "eslint src/ && grunt lint && gulp lint",
		"testonly": "./resources/node_test.sh",
		"test": "npm run lint && npm run testonly",
		"build": "run-s build:*",
		"build:dist": "run-s clean:dist bundle:dist copy:dist stats:dist",
		"build:pages": "gulp --gulpfile gulpfile.js default",
		"stats:dist": "node ./resources/dist-stats.js",
		"clean:dist": "rimraf dist",
		"bundle:dist": "rollup -c ./resources/rollup-config.js",
		"copy:dist": "node ./resources/copy-dist-typedefs.js",
		"lint": "run-s lint:*",
		"lint:ts": "tslint \"__tests__/*/.ts\"",
		"lint:js": "eslint \"{__tests__,src,pages/src,pages/lib}/*/.js\"",
		"format": "prettier --single-quote --write \"{__tests__,src,pages/src,pages/lib}/*/.js\"",
		"testonly": "./resources/jest",
		"test": "run-s format build lint testonly type-check",
		"test:travis": "npm run test && ./resources/check-changes",
		"type-check": "cd type-definitions/tests && flow check",
		"perf": "node ./resources/bench.js",
		"start": "npm run build && node ./pages/resources/start.js",
		"start": "gulp --gulpfile gulpfile.js dev",
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		@@ -94,0 +104,0 @@ "dist",

README.md

		Immutable collections for JavaScript
		====================================

		[![Build Status](https://travis-ci.org/facebook/immutable-js.svg)](https://travis-ci.org/facebook/immutable-js)
		[![Build Status](https://travis-ci.org/facebook/immutable-js.svg?branch=master)](https://travis-ci.org/facebook/immutable-js)

		@@ -125,3 +125,3 @@ [Immutable][] data cannot be changed once created, leading to much simpler
		Immutable collections should be treated as values rather than objects. While
		objects represents some thing which could change over time, a value represents
		objects represent some thing which could change over time, a value represents
		the state of that thing at a particular instance of time. This principle is most
		@@ -144,3 +144,3 @@ important to understanding the appropriate use of immutable data. In order to
		for using `===` reference equality to determine if something definitely has not
		changed. This can be extremely useful when used within memoization function
		changed. This can be extremely useful when used within a memoization function
		which would prefer to re-run the function if a deeper equality check could
		@@ -308,5 +308,3 @@ potentially be more costly. The `===` equality check is also used internally by
		// Map { a: Map { b: Map { c: List [ 3, 4, 5 ], d: 6 } } }
		```

		```javascript
		nested2.getIn(['a', 'b', 'd']); // 6
		@@ -343,3 +341,3 @@
		example, no intermediate arrays are ever created, filter is called three times,
		and map is only called twice:
		and map is only called once:

		@@ -352,7 +350,7 @@ console.log(oddSquares.get(1)); // 9

		Seq allow for the efficient chaining of sequence operations, especially when
		Seq allows for the efficient chaining of sequence operations, especially when
		converting to a different concrete type (such as to a JS object):

		seq.flip().map(key => key.toUpperCase()).flip().toObject();
		// Map { A: 1, B: 1, C: 1 }
		// { A: 1, B: 1, C: 1 }

		@@ -479,2 +477,2 @@ As well as expressing logic that would otherwise seem memory-limited:

		`Immutable` is [BSD-licensed](./LICENSE). We also provide an additional [patent grant](./PATENTS).
		`Immutable` is [BSD-licensed](https://github.com/facebook/immutable-js/blob/master/LICENSE). We also provide an additional [patent grant](https://github.com/facebook/immutable-js/blob/master/PATENTS).

contrib/cursor/__tests__/Cursor.ts.skip

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dist/immutable-nonambient.d.ts

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dist/immutable.d.ts

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dist/immutable.js

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dist/immutable.js.flow

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		*/
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