refactor(ext/fs): align error messages (#25414)

Aligns the error messages in the ext/fs folder to be in-line with the
Deno style guide.

ext/fs/30_fs.js

@@ -578,7 +578,7 @@ class FsFile {
     this.#rid = rid;
     if (!symbol || symbol !== SymbolFor("Deno.internal.FsFile")) {
       throw new TypeError(
-        "`Deno.FsFile` cannot be constructed, use `Deno.open()` or `Deno.openSync()` instead.",
+        "'Deno.FsFile' cannot be constructed, use 'Deno.open()' or 'Deno.openSync()' instead",
       );
     }
   }
@@ -713,11 +713,15 @@ function checkOpenOptions(options) {
       (val) => val === true,
     ).length === 0
   ) {
-    throw new Error("OpenOptions requires at least one option to be true");
+    throw new Error(
+      "'options' requires at least one option to be true",
+    );
   }
 
   if (options.truncate && !options.write) {
-    throw new Error("'truncate' option requires 'write' option");
+    throw new Error(
+      "'truncate' option requires 'write' to be true",
+    );
   }
 
   const createOrCreateNewWithoutWriteOrAppend =
@@ -726,7 +730,7 @@ function checkOpenOptions(options) {
 
   if (createOrCreateNewWithoutWriteOrAppend) {
     throw new Error(
-      "'create' or 'createNew' options require 'write' or 'append' option",
+      "'create' or 'createNew' options require 'write' or 'append' to be true",
     );
   }
 }

tests/unit/files_test.ts

@@ -137,31 +137,31 @@ Deno.test(async function openOptions() {
       await Deno.open(filename, { write: false });
     },
     Error,
-    "OpenOptions requires at least one option to be true",
+    "'options' requires at least one option to be true",
   );
 
   await assertRejects(
     async () => {
       await Deno.open(filename, { truncate: true, write: false });
     },
     Error,
-    "'truncate' option requires 'write' option",
+    "'truncate' option requires 'write' to be true",
   );
 
   await assertRejects(
     async () => {
       await Deno.open(filename, { create: true, write: false });
     },
     Error,
-    "'create' or 'createNew' options require 'write' or 'append' option",
+    "'create' or 'createNew' options require 'write' or 'append' to be true",
   );
 
   await assertRejects(
     async () => {
       await Deno.open(filename, { createNew: true, append: false });
     },
     Error,
-    "'create' or 'createNew' options require 'write' or 'append' option",
+    "'create' or 'createNew' options require 'write' or 'append' to be true",
   );
 });