diff --git a/packages/mermaid/src/rendering-util/handle-markdown-text.spec.js b/packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts
similarity index 100%
rename from packages/mermaid/src/rendering-util/handle-markdown-text.spec.js
rename to packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts
diff --git a/packages/mermaid/src/rendering-util/handle-markdown-text.js b/packages/mermaid/src/rendering-util/handle-markdown-text.ts
similarity index 100%
rename from packages/mermaid/src/rendering-util/handle-markdown-text.js
rename to packages/mermaid/src/rendering-util/handle-markdown-text.ts