This script ensures that either //@flow or //@no-flow is present in
every js file. Every existing js file that would fail this check has
been given //@no-flow, we should work to remove all of these in the
future.
Test plan:
I verified that `yarn travis` fails before fixing the other js files,
and passes afterwards.
Summary:
To be honest, I have no idea what exactly this does or why it’s
necessary, but if we don’t do this then it is not possible to `import`
the exported member from a Webpack-bundled script. I’ve seen this
pattern before; one day I’ll actually figure out what it does. :-)
Test Plan:
Note that `yarn travis` (success) and `yarn travis --full` (failure; no
GitHub token) both have the expected behaviors.
wchargin-branch: execdependencygraph-export
Summary:
We’d like to use the same abstraction for creating multiple cred graphs
and then combining them together. This will enable us to do that.
Test Plan:
Run `yarn travis` to test the success case, and `yarn travis --full`
(without setting a `GITHUB_TOKEN`) to test the failure case.
wchargin-branch: execdepgraph
Summary:
This could catch failures in build configuration or with Webpack. It’s
unlikely to catch any logic errors, because no production code is run.
In any case, it’s fast enough; it finishes at about the same time as
`ci-test` and `check-pretty`.
Test Plan:
From the repository root, run `rm -r bin; yarn travis`, and note that
the `bin/` directory is regenerated.
wchargin-branch: ci-backend
Summary:
This prevents the boilerplate output of the form
```
> sourcecred-explorer@0.1.0 check-pretty /home/wchargin/git/sourcecred
> prettier --list-different '**/*.js'
```
(superfluous linebreaks included). In the case that a script fails, it
also omits the giant “this is most likely not a problem with npm” block.
The downside to this is that it suppresses any errors in npm-run-script
itself. For instance, `npm run wat` produces “missing script: wat”,
while `npm run --silent wat` just silently exits with 1. This does not
silence the actual scripts themselves, so things like lint errors or
test failures will still appear.
Test Plan:
Run `yarn travis` before and after this commit, and note that the
resulting build log is prettier after.
wchargin-branch: ci-silent
Summary:
This CI script accomplishes two tasks:
1. It speeds up our build by parallelizing where possible.
2. It opens the possibility for running Travis cron jobs.
Currently, this script by default does the same amount of work as our
current CI script. However, I’d like to move `yarn backend` into the
list of basic actions: a backend build failure should fail CI.
Note: this script is written to be executable directly by Node, so we
can’t use Flow types with the standard syntax. Instead, we use the
comment syntax: https://flow.org/en/docs/types/comments/
Test Plan:
The following should pass with useful output:
- `npm run travis`
- `GITHUB_TOKEN="your_github_token" npm run travis -- --full`
The following should fail with useful output:
- `npm run travis -- --full` (fail)
To test different failure modes, it can be helpful to add
```js
{id: "doomed", cmd: ["false"], deps: []},
{id: "orphan", cmd: ["whoami"], deps: ["who", "are", "you"]},
```
to the list of `basicTasks` in `travis.js`.
To test performance:
```shell
$ time node ./config/travis.js >/dev/null 2>/dev/null
real 0m8.306s
user 0m20.336s
sys 0m1.364s
$ time bash -c \
> 'npm run check-pretty && npm run lint && npm run flow && CI=1 npm run test' \
> >/dev/null 2>/dev/null
real 0m12.427s
user 0m13.752s
sys 0m0.804s
```
A 50% savings is not bad at all—and the raw time saved should only
improve from here on, as the individual steps start taking more time.
wchargin-branch: custom-ci
Dandelion Mané
William Chargin