Uses boolifyWithDefaults

src/config.js

@@ -6,6 +6,7 @@ import type {Manifest, PackageRemote, WorkspacesManifestMap, WorkspacesConfig} f
 import type PackageReference from './package-reference.js';
 import {execFromManifest} from './util/execute-lifecycle-script.js';
 import {resolveWithHome} from './util/path.js';
+import {boolifyWithDefault} from './util/conversion.js';
 import normalizeManifest from './util/normalize-manifest/index.js';
 import {MessageError} from './errors.js';
 import * as fs from './util/fs.js';
@@ -408,8 +409,6 @@ export default class Config {
       }
     }
 
-    const toBool = value => value !== 'false' && value !== 'no' && value !== '0';
-
     this.plugnplayShebang = String(this.getOption('plugnplay-shebang') || '') || '/usr/bin/env node';
     this.plugnplayBlacklist = String(this.getOption('plugnplay-blacklist') || '') || null;
 
@@ -424,7 +423,7 @@ export default class Config {
     this.linkFileDependencies = Boolean(this.getOption('yarn-link-file-dependencies'));
     this.packBuiltPackages = Boolean(this.getOption('experimental-pack-script-packages-in-mirror'));
 
-    this.autoAddIntegrity = !toBool(this.getOption('unsafe-disable-integrity-migration') || 'true');
+    this.autoAddIntegrity = !boolifyWithDefault(this.getOption('unsafe-disable-integrity-migration'), 'true');
 
     //init & create cacheFolder, tempFolder
     this.cacheFolder = path.join(this._cacheRootFolder, 'v' + String(constants.CACHE_VERSION));