It was getting rather complicated to keep track of which Segment keys
were set where, and under which name.
The build script now injects a key even in test environments, but it is
unused if `IN_TEST` is truthy. This should be functionally equivalent
to the old logic. I find this simpler mainly for two reasons: there is
one less intermediate variable to keep track of now, and the `IN_TEST`
check is now directly in the module where we're constructing the
`segment` instance, rather than being referenced at a distance in a
comment.
The old setup made it difficult to turn on metrics for specific e2e
tests as well, which will be done in a subsequent PR.
* Fix require-unicode-regexp issues
See [`require-unicode-regexp`](https://eslint.org/docs/rules/require-unicode-regexp) for more information.
This change enables `require-unicode-regexp` and fixes the issues raised by the rule.
* Remove case-insensitive flag from regexps
Our source maps were being corrupted during minification, because the
`gulp-terser-js` plugin we were using didn't account for the existence
of sourcemaps in the input. A configuration option to allow the input
of sourcemaps was added in v5.2.0. The plugin has been updated, and we
now use this option.
Previously the generated sourcemaps had an invalid entry in the
"sources" array, with the filename of the bundle itself. This was not a
real source. After this change, this invalid source is no longer
present.
The Sentry DSN is now expected to be provided via environment variable
for production builds. The build script will fail if it is missing, and
an error will be thrown at runtime if it is missing.
The `SENTRY_DSN` environment variable has been set in CI to the old
value for `SENTRY_PROD_DSN`. We can migrate to a new DSN at some point
in the future.
The MetaMetrics project ID can now be set via environment variable. It
has not been set yet in practice, so for now the old project IDs will
still be used. This is in preparation for migrating to a new project.
