refactor: Default for options.output.

Default to css-blocks.css if not declared. Unifies hardcoded defaults
from multiple locations.

Author: Tim Lindvall

Diff for: packages/@css-blocks/ember-app/src/broccoli-plugin.ts

@@ -214,6 +214,5 @@ function addSourcemapInfoToOptimizedCss(css: string, sourcemap?: string) {
  * @returns - The path for the CSS Blocks compiled content.
  */
 function cssBlocksOutputFilename(options: ResolvedCSSBlocksEmberOptions) {
-  let outputName = options.output || "css-blocks.css";
-  return `app/styles/${outputName}`;
+  return `app/styles/${options.output}`;
 }

Diff for: packages/@css-blocks/ember-app/src/index.ts

@@ -259,9 +259,8 @@ function buildBroccoliConcatOptions(env: AddonEnvironment): BroccoliConcatOption
  * @returns - Default broccoli-concat options, accounting for current env settings.
  */
 function buildDefaultBroccoliConcatOptions(env: AddonEnvironment): BroccoliConcatOptions {
-  const cssBlocksOutputFilename = env.config.output || "css-blocks.css";
   return {
-    inputFiles: [`assets/${cssBlocksOutputFilename}`, `assets/${env.modulePrefix}.css`],
+    inputFiles: [`assets/${env.config.output}`, `assets/${env.modulePrefix}.css`],
     outputFile: `assets/${env.modulePrefix}.css`,
     sourceMapConfig: {
       enabled: true,

Diff for: packages/@css-blocks/ember-utils/src/options.ts

@@ -65,7 +65,7 @@ export interface CSSBlocksEmberOptions {
 }
 
 export interface ResolvedCSSBlocksEmberOptions {
-  output?: string;
+  output: string;
   aliases: ObjectDictionary<string>;
   analysisOpts: AnalysisOptions;
   parserOpts: ParserOptions;
@@ -99,5 +99,7 @@ export function getConfig(root: string, isProduction: boolean, options: CSSBlock
   if (options.output !== undefined && typeof options.output !== "string") {
     throw new Error(`Invalid css-blocks options in 'ember-cli-build.js': Output must be a string. Instead received ${options.output}.`);
   }
+  options.output = options.output || "css-blocks.css";
+
   return <ResolvedCSSBlocksEmberOptions>options;
 }