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dart2js will migrate slowly to modern JavaScript. The --legacy-javascript flag causes emitted code to be compatible with IE11, our only supported non-modern target. This is a temporary flag until IE11 is removed from support. The negative flag --no-legacy-javascript allows the code to be incompatible with legacy browsers and, over time, be improved to take advantage of modern JavaScript features. Initially --no-legacy-javascript will use some minimal features that are incompatible with IE11 as a 'trip-wire' to ensure that --legacy-javascript is always used for IE11. dart2js analytics can then be used to assess how much --legacy-javascript is used. (The 'trip-wire' unsupported feature is unguarded use of JavaScript Symbols.) The default at this change is --legacy-javascript so that this change is non-breaking. The default will be changed soon to --no-legacy-javascript. Change-Id: Ic13461362a5fa80293fb66b112945d1404a64a03 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/139867 Commit-Queue: Stephen Adams <sra@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com> |
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| .. | ||
| _fe_analyzer_shared | ||
| _js_interop_checks | ||
| analysis_server | ||
| analysis_server_client | ||
| analysis_tool | ||
| analyzer | ||
| analyzer_cli | ||
| analyzer_plugin | ||
| async_helper | ||
| build_integration | ||
| compiler | ||
| dart2js_tools | ||
| dart2native | ||
| dart_internal | ||
| dartdev | ||
| dartfix | ||
| dev_compiler | ||
| diagnostic | ||
| expect | ||
| front_end | ||
| frontend_server | ||
| js | ||
| js_ast | ||
| kernel | ||
| meta | ||
| modular_test | ||
| native_stack_traces | ||
| nnbd_migration | ||
| smith | ||
| sourcemap_testing | ||
| status_file | ||
| telemetry | ||
| test_runner | ||
| testing | ||
| vm | ||
| vm_service | ||
| .gitignore | ||
| BUILD.gn | ||
| pkg.status | ||