From 575d13765dbcc84a0d7c3d711d56b19573af950c Mon Sep 17 00:00:00 2001
From: dankeboy36 <111981763+dankeboy36@users.noreply.github.com>
Date: Fri, 1 Dec 2023 21:28:58 +0100
Subject: [PATCH] fix: document immutable (#2)

Signed-off-by: dankeboy36 <dankeboy36@gmail.com>
---
 README.md                  | 6 ------
 src/__tests__/fqbn.spec.ts | 3 +++
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 917c1bc..fd19e06 100644
--- a/README.md
+++ b/README.md
@@ -72,12 +72,6 @@ assert.ok(new FQBN('a:b:c:o1=v1,o2=v2').equals(new FQBN('a:b:c:o2=v2,o1=v1')));
 
 ## Development
 
-1. Install the dependencies
-
-   ```sh
-   npm i
-   ```
-
 1. Build
 
    ```sh
diff --git a/src/__tests__/fqbn.spec.ts b/src/__tests__/fqbn.spec.ts
index 1f5a5e5..228514d 100644
--- a/src/__tests__/fqbn.spec.ts
+++ b/src/__tests__/fqbn.spec.ts
@@ -319,6 +319,9 @@ describe('fqbn', () => {
     assert.strictEqual(fqbn2.boardId, 'mkr1000');
     assert.deepStrictEqual(fqbn2.options, { o1: 'v1' });
 
+    // immutable
+    assert.strictEqual(fqbn.options, undefined);
+
     // withConfigOptions (add + update)
     const fqbn3 = fqbn2.withConfigOptions(
       {