`Async.jankYielder` is known to, unfortunately, cause jank by creating a lot of
immediately resolved promises that must be then GCed. For a collection of 50
items, it will create 50 promises and 49 of them will immediately resolve.
Instead of `Async.jankYielder`, we now have `Async.yieldState`, which simply
keeps track of whether or not the caller should yield to the event loop. Two
higher level looping constructs are built on top of it:
* `Async.yieldingIterator`, which has been rewritten to not create extraneous
promises; and
* `Async.yieldingForEach`, which is a replacement for awaiting
`Async.jankYielder` in a loop. Instead, it accepts the loop body as a
function.
Each of these can share an instance of an `Async.yieldState`, which allows an
object with multiple loops to yield every N iterations overall, instead of
every N iterations of each loop, which keeps the behaviour of using one
`Async.jankYielders` in multiple places.
Differential Revision: https://phabricator.services.mozilla.com/D26229
--HG--
extra : moz-landing-system : lando
`Async.jankYielder` is known to, unfortunately, cause jank by creating a lot of
immediately resolved promises that must be then GCed. For a collection of 50
items, it will create 50 promises and 49 of them will immediately resolve.
Instead of `Async.jankYielder`, we now have `Async.yieldState`, which simply
keeps track of whether or not the caller should yield to the event loop. Two
higher level looping constructs are built on top of it:
* `Async.yieldingIterator`, which has been rewritten to not create extraneous
promises; and
* `Async.yieldingForEach`, which is a replacement for awaiting
`Async.jankYielder` in a loop. Instead, it accepts the loop body as a
function.
Each of these can share an instance of an `Async.yieldState`, which allows an
object with multiple loops to yield every N iterations overall, instead of
every N iterations of each loop, which keeps the behaviour of using one
`Async.jankYielders` in multiple places.
Differential Revision: https://phabricator.services.mozilla.com/D26229
--HG--
extra : moz-landing-system : lando
`Async.jankYielder` is known to, unfortunately, cause jank by creating a lot of
immediately resolved promises that must be then GCed. For a collection of 50
items, it will create 50 promises and 49 of them will immediately resolve.
Instead of `Async.jankYielder`, we now have `Async.yieldState`, which simply
keeps track of whether or not the caller should yield to the event loop. Two
higher level looping constructs are built on top of it:
* `Async.yieldingIterator`, which has been rewritten to not create extraneous
promises; and
* `Async.yieldingForEach`, which is a replacement for awaiting
`Async.jankYielder` in a loop. Instead, it accepts the loop body as a
function.
Each of these can share an instance of an `Async.yieldState`, which allows an
object with multiple loops to yield every N iterations overall, instead of
every N iterations of each loop, which keeps the behaviour of using one
`Async.jankYielders` in multiple places.
Differential Revision: https://phabricator.services.mozilla.com/D26229
--HG--
extra : moz-landing-system : lando
***
Bug 1514594: Part 3a - Change ChromeUtils.import to return an exports object; not pollute global. r=mccr8
This changes the behavior of ChromeUtils.import() to return an exports object,
rather than a module global, in all cases except when `null` is passed as a
second argument, and changes the default behavior not to pollute the global
scope with the module's exports. Thus, the following code written for the old
model:
ChromeUtils.import("resource://gre/modules/Services.jsm");
is approximately the same as the following, in the new model:
var {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
Since the two behaviors are mutually incompatible, this patch will land with a
scripted rewrite to update all existing callers to use the new model rather
than the old.
***
Bug 1514594: Part 3b - Mass rewrite all JS code to use the new ChromeUtils.import API. rs=Gijs
This was done using the followng script:
https://bitbucket.org/kmaglione/m-c-rewrites/src/tip/processors/cu-import-exports.jsm
***
Bug 1514594: Part 3c - Update ESLint plugin for ChromeUtils.import API changes. r=Standard8
Differential Revision: https://phabricator.services.mozilla.com/D16747
***
Bug 1514594: Part 3d - Remove/fix hundreds of duplicate imports from sync tests. r=Gijs
Differential Revision: https://phabricator.services.mozilla.com/D16748
***
Bug 1514594: Part 3e - Remove no-op ChromeUtils.import() calls. r=Gijs
Differential Revision: https://phabricator.services.mozilla.com/D16749
***
Bug 1514594: Part 3f.1 - Cleanup various test corner cases after mass rewrite. r=Gijs
***
Bug 1514594: Part 3f.2 - Cleanup various non-test corner cases after mass rewrite. r=Gijs
Differential Revision: https://phabricator.services.mozilla.com/D16750
--HG--
extra : rebase_source : 359574ee3064c90f33bf36c2ebe3159a24cc8895
extra : histedit_source : b93c8f42808b1599f9122d7842d2c0b3e656a594%2C64a3a4e3359dc889e2ab2b49461bab9e27fc10a7
Automatic changes by ESLint, except for manual corrections for .xml files.
Differential Revision: https://phabricator.services.mozilla.com/D4439
--HG--
extra : moz-landing-system : lando
This patch was autogenerated by my decomponents.py
It covers almost every file with the extension js, jsm, html, py,
xhtml, or xul.
It removes blank lines after removed lines, when the removed lines are
preceded by either blank lines or the start of a new block. The "start
of a new block" is defined fairly hackily: either the line starts with
//, ends with */, ends with {, <