@voitanos/eslint-preset-spfx-react/scripts/update-gulpfile-eslint.js

Preset to swap out TSLint in favor of ESLint in SharePoint Framework (non-React) projects.

"use strict";
var eslint = require('gulp-eslint');
var updateGulpfile = function (build) {
    // create the subtask
    var eslintSubTask = build.subTask('eslint', function (gulp) {
        return gulp.src(['src/**/*.{ts,tsx}'])
            .pipe(eslint('./config/eslint.json'))
            .pipe(eslint.format())
            .pipe(eslint.failAfterError());
    });
    // register the task as part of the pre-build process
    build.rig.addPreBuildTask(build.task('eslint', eslintSubTask));
};
exports.updateGulpfile = updateGulpfile;