Merge pull request #259 from mizdra/support-pager-for-windows

Fix problem with printing lint results using pager in windows

package.json

@@ -71,7 +71,6 @@
     "estraverse": "^5.3.0",
     "find-cache-dir": "^4.0.0",
     "is-installed-globally": "^0.4.0",
-    "node-pager": "^0.3.6",
     "ora": "^6.1.2",
     "table": "^6.8.1",
     "terminal-link": "^3.0.0",

src/action/print-result-details.ts

@@ -1,6 +1,6 @@
 import { Remote } from 'comlink';
 import { ESLint } from 'eslint';
-import pager from 'node-pager';
+import { pager } from '../cli/pager.js';
 import { promptToInputDisplayMode } from '../cli/prompt.js';
 import { SerializableCore } from '../core-worker.js';
 

src/cli/pager.ts

@@ -0,0 +1,34 @@
+import { spawnSync } from 'child_process';
+import { writeFile } from 'fs/promises';
+import { join } from 'path';
+import { getCacheDir } from '../util/cache.js';
+
+const PAGER_CONTENT_FILE_PATH = join(getCacheDir(), 'pager-content.txt');
+
+export async function pager(content: string): Promise<void> {
+  if (process.platform == 'win32') {
+    return pagerForWindows(content);
+  } else {
+    return pagerForPOSIX(content);
+  }
+}
+
+async function pagerForWindows(content: string): Promise<void> {
+  await writeFile(PAGER_CONTENT_FILE_PATH, content, 'utf-8');
+  try {
+    spawnSync('more', [PAGER_CONTENT_FILE_PATH], { shell: true, stdio: 'inherit' });
+  } catch (e) {
+    console.error('Failed to execute `more` command. Please install `more` command.');
+    throw e;
+  }
+}
+
+async function pagerForPOSIX(content: string): Promise<void> {
+  await writeFile(PAGER_CONTENT_FILE_PATH, content, 'utf-8');
+  try {
+    spawnSync('less', ['-R', PAGER_CONTENT_FILE_PATH], { shell: true, stdio: 'inherit' });
+  } catch (e) {
+    console.error('Failed to execute `less` command. Please install `less` command.');
+    throw e;
+  }
+}