README.md: Added note to not use yarn to install package

sveltejs · Feb 28, 2020 · 9dbda76 · 9dbda76
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commit 9dbda76
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diff --git a/README.md b/README.md
@@ -32,6 +32,8 @@ cd svelte
 npm install
 ```
 
+Note: Do not use yarn to install packages, as specific package versions in `package-lock.json` are used to build & test svelte.
+
 > Many tests depend on newlines being preserved as `<LF>`. On Windows, you can ensure this by cloning with:
 > ```bash
 > git -c core.autocrlf=false clone https://github.com/sveltejs/svelte.git