chore: changelog preview should be ok.

extensions/defaults.json

@@ -18,8 +18,7 @@
     "Yellow": "#FFA000"
   },
   "changelog": {
-    "lastversion": "",
-    "stopShowingChangelog": false
+    "lastversion": "1.0.2"
   },
   "icons": {
     "theme": {

extensions/helpers/changelog.ts

@@ -1,8 +1,15 @@
 import * as path from 'path';
+import * as vscode from 'vscode';
 
 import { getDefaultValues, getPackageJSON, writeFile } from "./fs";
-import { PATHS } from "../consts/paths";
+import { PATHS } from '../consts/paths';
 
+function previewFile(): void {
+  let uri = vscode.Uri.parse(path.join('file:///', PATHS.VSIX_DIR, './CHANGELOG.md'));
+
+  vscode.commands.executeCommand('markdown.showPreview', uri);
+
+}
 
 function splitVersion(input: string): { major: number, minor: number, patch: number } {
   let [ major, minor, patch ] = input.split('.').map(i => parseInt(i));
@@ -10,7 +17,23 @@ function splitVersion(input: string): { major: number, minor: number, patch: num
 }
 
 export function showChangelog(): void {
+  let extname: string = 'Microsoft.vscode-markdown';
+  let md = vscode.extensions.getExtension<any>(extname);
 
+  if (md === undefined) {
+    console.warn(`Ext not found ${ extname }`)
+    return;
+  }
+
+  if (md.isActive) {
+    previewFile();
+  } else {
+    md.activate().then(() => {
+      previewFile();
+    }, reason => {
+      console.warn(reason);
+    });
+  }
 }
 
 export function shouldShowChangelog(): boolean {
@@ -20,20 +43,19 @@ export function shouldShowChangelog(): boolean {
 
   if (defaults.changelog == undefined || (defaults.changelog !== undefined && typeof defaults.changelog.lastversion !== 'string')) {
     defaults.changelog = {
-      lastversion: packageJSON.version,
-      stopShowingChangelog: false
+      lastversion: packageJSON.version
     }
     out = true;
   } else {
     let versionCurrent = splitVersion(packageJSON.version);
     let versionOld = splitVersion(defaults.changelog.lastversion);
 
-    out = versionCurrent.major !== versionOld.major || versionCurrent.minor !== versionOld.minor || versionCurrent.patch !== versionOld.patch;
+    out = versionCurrent.major > versionOld.major || versionCurrent.minor > versionOld.minor || versionCurrent.patch > versionOld.patch;
 
     defaults.changelog.lastversion = packageJSON.version;
   }
 
-  writeFile(path.join(PATHS.VSIX_DIR, './extensions/defaults.json'), JSON.stringify(defaults, null, 2));
+  writeFile(path.join('./extensions/defaults.json'), JSON.stringify(defaults, null, 2));
 
   return out;
 }

extensions/interfaces/idefaults.ts

@@ -14,7 +14,6 @@ export interface IAccents {
 
 export interface IChangelog {
   lastversion: string;
-  stopShowingChangelog: boolean;
 }
 
 export interface IDefaultsThemeIcons {