chore: Remove pattern in favour of definePattern

packages/snaps-utils/src/snaps.test.ts

@@ -52,14 +52,14 @@ describe('assertIsValidSnapId', () => {
         // TODO: Either fix this lint violation or explain why it's necessary to
         //  ignore.
         // eslint-disable-next-line @typescript-eslint/restrict-template-expressions, @typescript-eslint/no-base-to-string
-        `Invalid snap ID: Expected the value to satisfy a union of \`intersection | string\`, but received: ${value}.`,
+        `Invalid snap ID: Expected the value to satisfy a union of \`intersection | Base Snap Id\`, but received: ${value}.`,
       );
     },
   );
 
   it('throws for invalid snap id', () => {
     expect(() => assertIsValidSnapId('foo:bar')).toThrow(
-      `Invalid snap ID: Expected the value to satisfy a union of \`intersection | string\`, but received: "foo:bar".`,
+      `Invalid snap ID: Expected the value to satisfy a union of \`intersection | Base Snap Id\`, but received: "foo:bar".`,
     );
   });
 
@@ -82,15 +82,15 @@ describe('assertIsValidSnapId', () => {
     'local:http://localhost:8000\r',
   ])('disallows whitespace #%#', (value) => {
     expect(() => assertIsValidSnapId(value)).toThrow(
-      /Invalid snap ID: Expected the value to satisfy a union of `intersection \| string`, but received: .+\./u,
+      /Invalid snap ID: Expected the value to satisfy a union of `intersection \| Base Snap Id`, but received: .+\./u,
     );
   });
 
   it.each(['local:😎', 'local:␡'])(
     'disallows non-ASCII symbols #%#',
     (value) => {
       expect(() => assertIsValidSnapId(value)).toThrow(
-        `Invalid snap ID: Expected the value to satisfy a union of \`intersection | string\`, but received: "${value}".`,
+        `Invalid snap ID: Expected the value to satisfy a union of \`intersection | Base Snap Id\`, but received: "${value}".`,
       );
     },
   );

packages/snaps-utils/src/snaps.ts

@@ -12,14 +12,13 @@ import {
   enums,
   intersection,
   literal,
-  pattern,
   refine,
   string,
   union,
   validate,
 } from '@metamask/superstruct';
 import type { Json } from '@metamask/utils';
-import { assert, isObject, assertStruct } from '@metamask/utils';
+import { assert, isObject, assertStruct, definePattern } from '@metamask/utils';
 import { base64 } from '@scure/base';
 import stableStringify from 'fast-json-stable-stringify';
 import validateNPMPackage from 'validate-npm-package-name';
@@ -228,7 +227,10 @@ export async function validateSnapShasum(
 export const LOCALHOST_HOSTNAMES = ['localhost', '127.0.0.1', '[::1]'] as const;
 
 // Require snap ids to only consist of printable ASCII characters
-export const BaseSnapIdStruct = pattern(string(), /^[\x21-\x7E]*$/u);
+export const BaseSnapIdStruct = definePattern(
+  'Base Snap Id',
+  /^[\x21-\x7E]*$/u,
+);
 
 const LocalSnapIdSubUrlStruct = uri({
   protocol: enums(['http:', 'https:']),

packages/snaps-utils/src/types.ts

@@ -2,7 +2,6 @@ import {
   instance,
   is,
   optional,
-  pattern,
   refine,
   size,
   string,
@@ -12,7 +11,7 @@ import {
 } from '@metamask/superstruct';
 import type { Infer, Struct } from '@metamask/superstruct';
 import type { Json } from '@metamask/utils';
-import { VersionStruct } from '@metamask/utils';
+import { definePattern, VersionStruct } from '@metamask/utils';
 
 import type { SnapCaveatType } from './caveats';
 import type { SnapFunctionExports, SnapRpcHookArgs } from './handlers';
@@ -26,8 +25,8 @@ export enum NpmSnapFileNames {
 }
 
 export const NameStruct = size(
-  pattern(
-    string(),
+  definePattern(
+    'Snap Name',
     /^(?:@[a-z0-9-*~][a-z0-9-*._~]*\/)?[a-z0-9-~][a-z0-9-._~]*$/u,
   ),
   1,