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Nate Biggs ac6150c4c0 [dart2js] Improve deferred part file logging.
Adds an "eventLog" property to the global "$__dart_deferred_initializers__" object. The event log is just a JS Array that gets initialized alongside $__dart_deferred_initializers__.

Each event entry is a String->String JS object. I unified the format of these event objects for easier parsing.

Each printed event is now valid JSON (passed through JSON.stringify) so we can more easily post-process the logs if necessary.

Fully replacing the existing "_eventLog" field makes the logging logic simpler. Having a single array allows us to not include a timestamp because the array captures the event ordering (actual timing doesn't matter). It also makes it easier to stringify the logs when there's only 1 data source/format.

Sample output:
```

{"hunkName":"out.js_1.part.js","event":"loadHunk"}
{"uri":"path_to/out.js_1.part.js","hunkName":"out.js_1.part.js","event":"downloadHunk"}
{"file":"out.js_1","event":"beginLoadPart"}
{"file":"out.js_1","event":"endPartLoad","hash":"aCscY7yv4EHodRPmCqYn5BqMelA="}
{"uri":"path_to/out.js_1.part.js","hunkName":"out.js_1.part.js","event":"downloadHunkSuccess"}
{"hunkName":"out.js_1.part.js","hash":"aCscY7yv4EHodRPmCqYn5BqMelA=","event":"initialize"}

```

Change-Id: Ifee73be0bf7dc53a0e7710ff033dd2b0fae9fb0e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/307240
Commit-Queue: Nate Biggs <natebiggs@google.com>
Reviewed-by: Stephen Adams <sra@google.com>
2023-06-09 17:05:11 +00:00
.dart_tool [infra] re-land work to auto-generate .dart_tool/package_config.json 2022-04-12 17:21:02 +00:00
.github Update PULL_REQUEST_TEMPLATE.md 2023-06-06 21:59:50 +00:00
benchmarks [benchmarks] Update legacy benchmarks to use the List.filled constructor 2023-05-22 14:14:42 +00:00
build [build] Remove unused pipes import from vs_toolchain.py 2023-06-06 10:45:24 +00:00
docs Spelling pkg analyzer lib 2023-01-25 14:08:27 +00:00
pkg [dart2js] Improve deferred part file logging. 2023-06-09 17:05:11 +00:00
runtime [VM/Timeline] Reset flow_ids_ in TimelineEvent::Reset 2023-06-09 16:18:47 +00:00
samples [test] Introduce status variable $simulator, and fix some cases missing simarm_x64. 2023-04-04 03:10:26 +00:00
sdk [dart2js] Improve deferred part file logging. 2023-06-09 17:05:11 +00:00
tests [gardening] Fix standalone/io/regress_50904_test 2023-06-09 17:04:29 +00:00
third_party [pkgs/native] Windows support + CI 2023-04-28 13:31:10 +00:00
tools Delete old debianpackage-linux builder. 2023-06-06 14:26:45 +00:00
utils [build] Decide in one place between using app-jit and kernel for the SDK snapshots. 2023-06-01 15:20:58 +00:00
.clang-format
.gitattributes [web] rename suite dart2js -> web. 2021-02-04 23:11:32 +00:00
.gitconfig [infra] Add documentation to .gitconfig 2018-06-11 18:24:16 +00:00
.gitignore [pkg][vm] Native Assets builder 2023-05-15 13:49:30 +00:00
.gn [infra] Migrate scripts to python3 2021-04-15 10:10:20 +00:00
.mailmap Fixed various typos in a lot of files 2022-07-25 12:21:59 +00:00
.style.yapf Mass format python with yapf 2019-08-05 20:34:31 +00:00
.vpython [infra] Add .vpython spec to fix gsutil on the bots (#31065) 2018-10-11 15:11:35 +00:00
AUTHORS Simplify the license situation 2022-09-14 21:06:22 +00:00
BUILD.gn Roll Fuchsia SDK to 7b3b23b2c0da59b3aceab6c49fbe7d9ed34d7382. 2023-02-09 22:43:36 +00:00
CHANGELOG.md [dart:js_interop] Remove ObjectLiteral 2023-06-06 20:50:36 +00:00
codereview.settings [infra] Default presubmits to use python3 2021-08-24 08:20:47 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md 2023-05-16 13:04:13 +00:00
DEPS [co19] Roll co19 to 672e21d5bbd6b4b555f8cf4e7f8119881392e579 2023-06-09 11:13:21 +00:00
LICENSE Update LICENSE 2021-04-08 07:57:10 +00:00
OWNERS [owners] update the top-level owners file 2022-11-11 21:03:52 +00:00
PATENT_GRANT Rename patent file 2019-08-16 12:03:17 +00:00
PRESUBMIT.py Add year checking in PRESUBMIT.py 2023-02-01 16:31:32 +00:00
README.dart-sdk Fix README.dart-sdk file to reflect current contents of the SDK 2023-02-02 03:10:09 +00:00
README.md master => main 2021-09-10 08:02:49 +00:00
sdk.code-workspace Add an explicit Visual Studio Code workspace 2023-05-17 23:08:19 +00:00
sdk_args.gni Fix typos 2022-06-15 11:08:28 +00:00
SECURITY.md Add link to published advisories 2022-02-08 19:45:07 +00:00
WATCHLISTS Add a watchlist entry for changes to _fe_analyzer_shared 2023-03-31 13:59:27 +00:00

Dart

A client-optimized language for fast apps on any platform

Dart is:

  • Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.

  • Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.

Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:

  • Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.

  • Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).

Dart platforms illustration

License & patents

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See LICENSE and PATENT_GRANT.

Using Dart

Visit dart.dev to learn more about the language, tools, and to find codelabs.

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