spfx-versioning.js

module.exports = function(build) {
  const gutil = require("gulp-util");
  const fs = require("fs");
  const gulp = require('gulp');

  var getJson = function(file) {
    return JSON.parse(fs.readFileSync(file, "utf8"));
  };

  let bumpRevisionSubTask = build.subTask("bump-revision-subtask", function(
    gulp,
    buildOptions,
    done
  ) {
    var skipBumpRevision = buildOptions.args["revision"] === false;
    if (!skipBumpRevision) {
      var pkgSolution = getJson("./config/package-solution.json");
      var oldVersionNumber = String(pkgSolution.solution.version);
      gutil.log("Old Version: " + oldVersionNumber);
      var oldBuildNumber = parseInt(oldVersionNumber.split(".")[3]);
      gutil.log("Old Build Number: " + oldBuildNumber);
      var newBuildNumber = oldBuildNumber + 1;
      gutil.log("New Build Number: " + newBuildNumber);
      var newVersionNumber =
        oldVersionNumber.substring(
          0,
          String(oldVersionNumber).length - String(oldBuildNumber).length
        ) + String(newBuildNumber);
      gutil.log("New Version: " + newVersionNumber);
      pkgSolution.solution.version = newVersionNumber;
      fs.writeFileSync(
        "./config/package-solution.json",
        JSON.stringify(pkgSolution, null, 4)
      );
    }
    return gulp
      .src("./config/package-solution.json")
      .pipe(skipBumpRevision ? gutil.noop() : gulp.dest("./config"));
  });

  let bumpRevisionTask = build.task("bump-revision", bumpRevisionSubTask);

  gulp.task("version-sync", function() {
    var pkgConfig = getJson("./package.json");
    var pkgSolution = getJson("./config/package-solution.json");
    gutil.log("Old Version:\t" + pkgSolution.solution.version);
    var newVersionNumber = pkgConfig.version.split("-")[0] + ".0";
    pkgSolution.solution.version = newVersionNumber;
    gutil.log("New Version:\t" + pkgSolution.solution.version);
    fs.writeFileSync(
      "./config/package-solution.json",
      JSON.stringify(pkgSolution, null, 4)
    );
  });

  build.rig.addPreBuildTask(bumpRevisionTask);
};