Simplify by removing diff feature. Now just writes each template as an independent copy.

templates/yeoman/src/CreateGenerator.ts

@@ -1,10 +1,8 @@
-import * as yeoman from 'yeoman-generator';
 import * as glob from 'glob';
 import * as gitignore from 'gitignore-parser';
 import * as fs from 'fs';
 import * as path from 'path';
 import * as _ from 'lodash';
-import * as diff from 'diff';
 import * as mkdirp from 'mkdirp';
 import * as rimraf from 'rimraf';
 
@@ -33,63 +31,18 @@ function listFilesExcludingGitignored(root: string): string[] {
         .filter(fn => gitignoreEvaluator.accepts(fn));
 }
 
-function writeCommonFiles(outDir: string) {
-    let filesByTemplate = _.mapValues(templates, listFilesExcludingGitignored);
-    let commonFiles = _.intersection.apply(_, _.values(filesByTemplate));
-    
-    commonFiles.forEach(fn => {
-        let templateRoots = _.values(templates);
-        let origContent = fs.readFileSync(path.join(templateRoots[0], fn));            
-
-        if (isTextFile(fn)) {
-            // For text files, we copy the portion that's common to all the templates
-            let commonText = origContent.toString('utf8');
-            templateRoots.slice(1).forEach(otherTemplateRoot => {
-                let otherTemplateContent = fs.readFileSync(path.join(otherTemplateRoot, fn), 'utf8');
-                commonText = diff.diffLines(commonText, otherTemplateContent)
-                    .filter(c => !(c.added || c.removed))
-                    .map(c => c.value)
-                    .join('');
-            });
-            
-            writeFileEnsuringDirExists(outDir, fn, commonText);
-        } else {
-            // For binary (or maybe-binary) files, we only consider them common if they are identical across all templates
-            let isIdenticalEverywhere = !templateRoots.slice(1).some(otherTemplateRoot => {
-                return !fs.readFileSync(path.join(otherTemplateRoot, fn)).equals(origContent);
-            });
-            if (isIdenticalEverywhere) {
-                writeFileEnsuringDirExists(outDir, fn, origContent);
-            }
-        }
-    });
-}
-
-function writeDiffsForTemplate(sourceRoot: string, destRoot: string, commonRoot: string) {
+function writeTemplate(sourceRoot: string, destRoot: string) {
     listFilesExcludingGitignored(sourceRoot).forEach(fn => {
-        const commonFn = path.join(commonRoot, fn);
-        const sourceContent = fs.readFileSync(path.join(sourceRoot, fn));
-        
-        if (!fs.existsSync(commonFn)) {
-            // This file is unique to this template - just copy as-is
-            writeFileEnsuringDirExists(destRoot, fn, sourceContent);
-        } else {
-            let commonText = fs.readFileSync(commonFn, 'utf8');
-            let sourceText = sourceContent.toString('utf8');
-            if (commonText !== sourceText) {            
-                // Write a diff vs the common version of this file
-                let fileDiff = diff.createPatch(fn, commonText, sourceText, null, null);
-                writeFileEnsuringDirExists(destRoot, fn + '.patch', fileDiff);
-            }
-        }
-    });
+        const sourceContent = fs.readFileSync(path.join(sourceRoot, fn));        
+        writeFileEnsuringDirExists(destRoot, fn, sourceContent);
+    });    
 }
 
 const outputRoot = './generator-aspnet-spa';
 const commonRoot = path.join(outputRoot, 'templates/common'); 
 rimraf.sync(outputRoot);
-writeCommonFiles(commonRoot);
 
 _.forEach(templates, (templateRootDir, templateName) => {
-    writeDiffsForTemplate(templateRootDir, path.join(outputRoot, 'templates', templateName), commonRoot);
+    const outputDir = path.join(outputRoot, 'templates', templateName);
+    writeTemplate(templateRootDir, outputDir);
 });

templates/yeoman/tsd.json

@@ -20,9 +20,6 @@
     "lodash/lodash.d.ts": {
       "commit": "544a35a10866b32afda9c7f029c0764558563f4f"
     },
-    "diff/diff.d.ts": {
-      "commit": "544a35a10866b32afda9c7f029c0764558563f4f"
-    },
     "mkdirp/mkdirp.d.ts": {
       "commit": "544a35a10866b32afda9c7f029c0764558563f4f"
     },

templates/yeoman/typings/diff/diff.d.ts

@@ -1,60 +0,0 @@
-// Type definitions for diff
-// Project: https://github.com/kpdecker/jsdiff
-// Definitions by: vvakame <https://github.com/vvakame/>
-// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-
-declare namespace JsDiff {
-    interface IDiffResult {
-        value: string;
-        count?: number;
-        added?: boolean;
-        removed?: boolean;
-    }
-
-    interface IBestPath {
-        newPos: number;
-        componenets: IDiffResult[];
-    }
-
-    class Diff {
-        ignoreWhitespace:boolean;
-
-        constructor(ignoreWhitespace?:boolean);
-
-        diff(oldString:string, newString:string):IDiffResult[];
-
-        pushComponent(components:IDiffResult[], value:string, added:boolean, removed:boolean):void;
-
-        extractCommon(basePath:IBestPath, newString:string, oldString:string, diagonalPath:number):number;
-
-        equals(left:string, right:string):boolean;
-
-        join(left:string, right:string):string;
-
-        tokenize(value:string):any; // return types are string or string[]
-    }
-
-    function diffChars(oldStr:string, newStr:string):IDiffResult[];
-
-    function diffWords(oldStr:string, newStr:string):IDiffResult[];
-
-    function diffWordsWithSpace(oldStr:string, newStr:string):IDiffResult[];
-
-    function diffJson(oldObj: Object, newObj: Object): IDiffResult[];
-
-    function diffLines(oldStr:string, newStr:string):IDiffResult[];
-
-    function diffCss(oldStr:string, newStr:string):IDiffResult[];
-
-    function createPatch(fileName:string, oldStr:string, newStr:string, oldHeader:string, newHeader:string):string;
-
-    function applyPatch(oldStr:string, uniDiff:string):string;
-
-    function convertChangesToXML(changes:IDiffResult[]):string;
-
-    function convertChangesToDMP(changes:IDiffResult[]):{0: number; 1:string;}[];
-}
-
-declare module "diff" {
-    export = JsDiff;
-}

templates/yeoman/typings/tsd.d.ts

@@ -3,6 +3,5 @@
 /// <reference path="glob/glob.d.ts" />
 /// <reference path="minimatch/minimatch.d.ts" />
 /// <reference path="lodash/lodash.d.ts" />
-/// <reference path="diff/diff.d.ts" />
 /// <reference path="mkdirp/mkdirp.d.ts" />
 /// <reference path="rimraf/rimraf.d.ts" />