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node_modules/laravel-mix/src/Preprocessors/StandaloneSass.js

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+let File = require('../File');
+let path = require('path');
+let spawn = require('child_process').spawn;
+let notifier = require('node-notifier');
+
+class StandaloneSass {
+    /**
+     * Create a new StandaloneSass instance.
+     *
+     * @param {string} src
+     * @param {string} output
+     * @param {object} pluginOptions
+     */
+    constructor(src, output, pluginOptions) {
+        src = new File(path.resolve(src)).parsePath();
+        output = new File(output).parsePath();
+
+        if (output.isDir) {
+            output = new File(
+                path.join(output.path, src.name + '.css')
+            ).parsePath();
+        }
+
+        this.src = src;
+        this.output = output;
+        this.pluginOptions = pluginOptions;
+        this.shouldWatch = process.argv.includes('--watch');
+    }
+
+
+    /**
+     * Run the node-sass compiler.
+     */
+    run() {
+        this.compile();
+
+        if (this.shouldWatch) this.watch();
+    }
+
+
+    /**
+     * Compile Sass.
+     *
+     * @param {Boolean} watch
+     */
+    compile(watch = false) {
+        let output = this.output.path;
+
+        if (! output.startsWith(options.publicPath)) {
+            output = path.join(options.publicPath, output);
+        }
+
+        this.command = spawn(
+            'node-sass', [this.src.path, output].concat(this.options(watch)), { shell: true }
+        );
+
+        this.whenOutputIsAvailable((output, event) => {
+            if (event === 'error') this.onFail(output);
+            if (event === 'success') this.onSuccess(output);
+        });
+
+        return this;
+    }
+
+    /**
+     * Fetch the node-sass options.
+     *
+     * @param {Boolean} watch
+     */
+    options(watch) {
+        let sassOptions = [
+            '--precision=8',
+            '--output-style=' + (global.options.production ? 'compressed' : 'expanded'),
+        ];
+
+        if (watch) sassOptions.push('--watch');
+
+        if (this.pluginOptions.includePaths) {
+            this.pluginOptions.includePaths.forEach(
+                path => sassOptions.push('--include-path=' + path)
+            );
+        }
+
+        if (global.options.sourcemaps && ! global.options.production) {
+            sassOptions.push('--source-map-embed');
+        }
+
+        return sassOptions;
+    }
+
+
+    /**
+     * Compile Sass, while registering a watcher.
+     */
+    watch() {
+        return this.compile(true);
+    }
+
+
+    /**
+     * Register a callback for when output is available.
+     *
+     * @param {Function} callback
+     */
+    whenOutputIsAvailable(callback) {
+        this.command.stderr.on('data', output => {
+            output = output.toString();
+
+            let event = 'change';
+            if (/Error/.test(output)) event = 'error';
+            if (/Wrote CSS/.test(output)) event = 'success';
+
+            callback(output, event);
+        });
+    }
+
+
+    /**
+     * Handle successful compilation.
+     *
+     * @param {string} output
+     */
+    onSuccess(output) {
+        console.log("\n");
+        console.log(output);
+
+        if (global.options.notifications) {
+            notifier.notify({
+                title: 'Laravel Mix',
+                message: 'Sass Compilation Successful',
+                contentImage: 'node_modules/laravel-mix/icons/laravel.png'
+            });
+        }
+
+        global.events.fire(
+            'standalone-sass-compiled', File.find(this.output.path)
+        );
+    }
+
+
+    /**
+     * Handle failed compilation.
+     *
+     * @param {string} output
+     */
+    onFail(output) {
+        output = output.replace(/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g, '');
+        console.log("\n");
+        console.log('Sass Compilation Failed!');
+        console.log();
+        console.log(output);
+
+        if (global.options.notifications) {
+            notifier.notify({
+                title: 'Laravel Mix',
+                subtitle: 'Sass Compilation Failed',
+                message: JSON.parse(output).message,
+                contentImage: 'node_modules/laravel-mix/icons/laravel.png'
+            });
+        }
+
+        if (! this.shouldWatch) process.exit();
+    }
+}
+
+module.exports = StandaloneSass;