eslint-formatter-teamcity

A small eslint formatter plugin. ESLint violations are output nicely in the TeamCity build error format. Tested with TeamCity 9.1.x/10.0.x/2017+ and ESLint 1+

Installation

Node v12+ is required

Prerequisite: You must have either npm or Yarn installed.

npm install eslint-formatter-teamcity --save-dev

Usage

There are 3 ways to use eslint-formatter-teamcity:

1. As a regular ESLint formatter plugin:

eslint --format teamcity myfiletolint.js

2. Running against a generated ESLint JSON report:

Generate an ESLint JSON report:

eslint -f json -o result.json app/myjavascriptdirectory

Run eslint-formatter-teamcity against your new report:

node ./node_modules/eslint-formatter-teamcity/index.js result.json

3. Requiring and running directly from inside your JavaScript code:

const eslintTeamcity = require('eslint-formatter-teamcity');
console.log(eslintTeamcity(eslintOutput));

Configuration

As of version 2.0, there are two different formatters you can use to report with. They have no material impact on the output - they're just different ways of viewing the same data. The "Code Inspection" tab will only appear if you have configured eslint-formatter-teamcity to use the inspections reporter.

Errors (default)	Inspections

There are several ways that you can configure eslint-formatter-teamcity. You don't have to configure anything by default, you just have the option to if you would like. Settings are looked for in the following priority:

1. As a second argument

If you run eslint-formatter-teamcity by requiring it in JavaScript, you can pass a second argument to the function:

const eslintTeamcity = require('eslint-formatter-teamcity');
const options = {
  reporter: 'inspections', // default: 'errors'
  reportName: 'My ESLint Violations', // default: 'ESLint Violations'
  errorStatisticsName: 'My ESLint Error Count', // default: 'ESLint Error Count'
  warningStatisticsName: 'My ESLint Warning Count', // default: 'ESLint Warning Count'
};
console.log(eslintTeamcity(eslintOutput, options));

2. From your package.json

If you have a package.json file in the current directory, you can add an extra "eslint-formatter-teamcity" property to it:

...,
"eslint-formatter-teamcity": {
  "reporter": "inspections",
  "report-name": "My ESLint Violations",
  "error-statistics-name": "My ESLint Error Count",
  "warning-statistics-name": "My ESLint Warning Count"
},
...

3. ENV variables

export ESLINT_TEAMCITY_REPORTER=inspections
export ESLINT_TEAMCITY_REPORT_NAME="My Formatting Problems"
export ESLINT_TEAMCITY_ERROR_STATISTICS_NAME="My Error Count"
export ESLINT_TEAMCITY_WARNING_STATISTICS_NAME="My Warning Count"

You can also output your current settings to the log if you set:

export ESLINT_TEAMCITY_DISPLAY_CONFIG=true

gulp-eslint integration

const gulp = require('gulp');
const eslint = require('gulp-eslint');
const teamcity = require('eslint-formatter-teamcity');

gulp.task('lint', function () {
  return gulp.src(['js/**/*.js'])
    .pipe(eslint())
    .pipe(eslint.format(teamcity))
    .pipe(eslint.failAfterError());
});

See the gulp-eslint docs for more info on setting up a linting task.

TeamCity Usage

The simplest way to run eslint-formatter-teamcity is from an npm script in a build step. You could setup a script similar to this:

"scripts": {
  "lint:teamcity": "eslint app/src --format teamcity"
}

You could also run it as a gulp task (if you use gulp and gulp-eslint):

Kick off a new build, by deploying again, and you should see your build errors - assuming you have any!

Extras

eslint-formatter-teamcity will also output statistic values which you can use in TeamCity to track your progress in resolving errors!

Graphs can be setup from the Build -> Statistics tab.

Development

The quickest way to get a TeamCity server setup is to use Docker and ngrok:

1. Run ngrok

ngrok http 8111

2. Start TeamCity server and an agent

docker run -itd --name teamcity-server  \
    -v <path to data directory>:/data/teamcity_server/datadir \
    -v <path to logs directory>:/opt/teamcity/logs  \
    -p 8111:8111 \
    jetbrains/teamcity-server

docker run -itd --name teamcity-agent-1  \
    -e SERVER_URL="http://<ngrok id>.ngrok.io"  \
    -v <path to agent data>:/data/teamcity_agent/conf  \
    jetbrains/teamcity-agent

NOTE: You can't use localhost in SERVER_URL as it will refer to the container.

If you fork the repo and are testing on your local TeamCity instance, it may help to run rm -rf node_modules in a build step as TeamCity seems to cache versions between commits.

Issues

I will try keep this project up to date, but please log any issues here. Any pull requests are also welcome!