Validation has been added to the build script when the "prod" target is
selected. We now ensure that all expected environment variables are
set, and that no extra environment variables are present (which might
indicate that the wrong configuration file is being used).
The `prod` target uses a new `.metamaskprodrc` configuration file. Each
required variable can be specified either via environment variable or
via this config file. CI will continue set these via environment
variable, but for local manual builds we can use the config file to
simplify the build process and ensure consistency.
A new "dist" target has been added to preserve the ability to build a
"production-like" build without this validation.
The config validation is invoked early in the script, in the CLI
argument parsing step, so that it would fail more quickly. Otherwise
we'd have to wait a few minutes longer for the validation to run.
This required some refactoring, moving functions to the utility module
and moving the config to a dedicated module.
Additionally, support has been added for all environment variables to
be set via the config file. Previously the values `PUBNUB_PUB_KEY`,
`PUBNUB_SUB_KEY`, `SENTRY_DSN`, and `SWAPS_USE_DEV_APIS` could only be
set via environment variable. Now, all of these variables can be set
either way.
Closes#15003
The "scripts" portion of the build script has been refactored to pass
the "build target" throughout the file. The "build target" is the
target environment for the build, reflected by the command used to
start the build (e.g. "dev", "prod", "test", or "testDev").
Beforehand we derived the variables `devMode` and `testing` from this
build target, and passed these throughout the script. However, there is
a future change [1] that requires adding a new build target that acts
like "prod" in some ways but not others. It was easier to refactor to
pass through `buildTarget` directly than it was to add a _third_
boolean flag to indirectly represent the target.
The existence of the "testDev" target made it convenient to still have
the `testing` and `devMode` flag, so helper functions were added to
derive those values from the build target. I anticipate that these will
only be needed temporarily though. We will probably be able to get rid
of the `testDev` target and the related complexities when we start
adding more flags (like `--watch`[2] and `--minify`[3]) to the build
script directly.
[1]: https://github.com/MetaMask/metamask-extension/issues/15003
[2]: https://github.com/MetaMask/metamask-extension/issues/12767
[3]: https://github.com/MetaMask/metamask-extension/issues/12768
The build script now uses `yargs` rather than `minimist`. The CLI is
now better documented, and we have additional validation for each
option.
A patch for `yargs` was required because it would blow up on the line
`Error.captureStackTrace`. For some reason when running under LavaMoat,
that property did not exist.
Closes#12766
