Class: shaka.polyfill.Promise

A polyfill to implement Promises, primarily for IE. Only partially supports thenables, but otherwise passes the A+ conformance tests. Note that Promise.all() and Promise.race() are not tested by that suite.

Constructor

new Promise(opt_callbackopt)

A polyfill to implement Promises, primarily for IE. Only partially supports thenables, but otherwise passes the A+ conformance tests. Note that Promise.all() and Promise.race() are not tested by that suite.

Parameters:
Name Type Attributes Description
opt_callback function(function(*=), function(*=))= <optional>
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Members

(private, static, nullable) flushTimer_ :number

A timer ID to flush the queue.
Type:
  • number
Source:

(private, static) nativePromise_ :?

Type:
  • ?
Source:

(private, static, non-null) q_ :Array.<function()>

A queue of callbacks to be invoked ASAP in the next frame.
Type:
  • Array.<function()>
Source:

(static) State :number

Type:
  • number
Properties:
Name Value Type Description
PENDING 0 number
RESOLVED 1 number
REJECTED 2 number
Source:

(private, non-null) catches_ :Array.<shaka.polyfill.Promise.Child>

Type:
Source:

(private) state_ :shaka.polyfill.Promise.State

Type:
Source:

(private, non-null) thens_ :Array.<shaka.polyfill.Promise.Child>

Type:
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(private) value_ :*

Type:
  • *
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Methods

(static) all(othersnon-null) → (non-null) {shaka.polyfill.Promise}

Parameters:
Name Type Description
others Array.<!shaka.polyfill.Promise>
Source:
Returns:
Type
shaka.polyfill.Promise

(private, static) clearImmediate_(id)

Parameters:
Name Type Description
id number Clear a scheduled callback. Bound in shaka.polyfill.Promise.install() to a specific implementation.
Source:

(static) flush()

Flush the queue of callbacks. Used directly by some unit tests.
Source:

(private, static) handleThenable_(thenablenon-null, then, childnon-null)

Parameters:
Name Type Description
thenable Object
then Function
child shaka.polyfill.Promise
Source:

(static) install(opt_forceopt)

Install the polyfill if needed.
Parameters:
Name Type Attributes Description
opt_force boolean <optional>
 If true, force the polyfill to be installed. Used in some unit tests.
Source:

(static) race(othersnon-null) → (non-null) {shaka.polyfill.Promise}

Parameters:
Name Type Description
others Array.<!shaka.polyfill.Promise>
Source:
Returns:
Type
shaka.polyfill.Promise

(static) reject(opt_reasonopt) → (non-null) {shaka.polyfill.Promise}

Parameters:
Name Type Attributes Description
opt_reason * <optional>
Source:
Returns:
Type
shaka.polyfill.Promise

(static) resolve(opt_valueopt) → (non-null) {shaka.polyfill.Promise}

Parameters:
Name Type Attributes Description
opt_value * <optional>
Source:
Returns:
Type
shaka.polyfill.Promise

(private, static) setImmediate_(callback) → {number}

Parameters:
Name Type Description
callback function()
Source:
Returns:
Schedule a callback as soon as possible. Bound in shaka.polyfill.Promise.install() to a specific implementation.
Type
number

(static) uninstall()

Uninstall the polyfill. Used in some unit tests.
Source:

catch(opt_callbackopt) → (non-null) {shaka.polyfill.Promise}

Parameters:
Name Type Attributes Description
opt_callback function(*)= <optional>
Source:
Returns:
Type
shaka.polyfill.Promise

(private) reject_(opt_reasonopt)

Parameters:
Name Type Attributes Description
opt_reason * <optional>
Source:

(private) resolve_(opt_valueopt)

Parameters:
Name Type Attributes Description
opt_value * <optional>
Source:

(private) schedule_(childnon-null, callback)

Parameters:
Name Type Description
child shaka.polyfill.Promise
callback function | undefined
Source:

then(opt_successCallbackopt, opt_failCallbackopt) → (non-null) {shaka.polyfill.Promise}

Parameters:
Name Type Attributes Description
opt_successCallback function(*)= <optional>
opt_failCallback function(*)= <optional>
Source:
Returns:
Type
shaka.polyfill.Promise

Type Definitions

Child

A child promise, used for chaining.

Only exists in the context of a then or catch chain.
Type:
Properties:
Name Type Description
promise shaka.polyfill.Promise The child promise.
callback function | undefined The then or catch callback to be invoked as part of this chain.
Source: