boba/gulp_tasks/nunjucks.js

A lightweight, modular, CSS-only framework.

const gulp 				= require('gulp'),
      nunjucks 		  	= require('gulp-nunjucks'),
      plumber         	= require('gulp-plumber'),
      prism    			= require('gulp-prism'),
      gulpif            = require('gulp-if');

module.exports = (gulp, config) => {

    const isDist = config.flags.isDist;
    const docs =  isDist ? true : config.flags.docs;

    return (done) => {
        if (docs) {
            const version = config.flags.version;
            const highlight =  isDist ? true : config.flags.highlight;
            let versionNumber = require('../package.json').version;

            if (version) {
                let versionDigits = versionNumber.split('.');

                switch (version) {
                    case "major":
                        versionDigits[0] = (parseInt(versionDigits[0]) + 1).toString();
                        versionDigits[1] = 0;						
                        versionDigits[2] = 0;
                        break;
                    case "minor":
                        versionDigits[1] = (parseInt(versionDigits[1]) + 1).toString();
                        versionDigits[2] = 0;						
                        break;
                    case "patch":
                        versionDigits[2] = (parseInt(versionDigits[2]) + 1).toString();
                        break;
                    default:
                        break;
                }

                versionNumber = versionDigits.join('.');		
            }

            if (isDist) {
                console.log(" ");
                console.log("******************************");
                console.log("* Production Build Detected! *");
                console.log("* Did you version correctly? *");				
                console.log("******************************");
                console.log(" ");
                console.log("Building docs for version", versionNumber);
                console.log(" ");
            }

            return gulp.src(config.src.html, { base : './src' })
                        .pipe(plumber({
                            errorHandler: err => {
                                console.error(err);
                            }
                        }))
                        .pipe(nunjucks.compile({
                                versionNumber: versionNumber,
                                showcaseSites: config.data.showcase
                            }))
                        .pipe(gulpif(highlight, prism()))
                        .pipe(gulp.dest(config.dist.html))
        }
        done();
    };
};