bug: ext.startsWith is not a function

[midirhee12]

After adding this to the svelte.config.js:

    mdsvex({
      extension: [".md", ".svx"],
    }),

I get the following:

TypeError: Error while preprocessing /home/midirhee12/Projects/midirhee12/personal-website/main/.svelte-kit/generated/root.svelte - ext.startsWith is not a function
    at /home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected][email protected]/node_modules/mdsvex/dist/main.cjs.js:24416:71
    at Array.map (<anonymous>)
    at markup (/home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected][email protected]/node_modules/mdsvex/dist/main.cjs.js:24416:56)
    at process_markup (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected]/node_modules/svelte/src/compiler/preprocess/index.js:309:26)
    at Module.preprocess (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected]/node_modules/svelte/src/compiler/preprocess/index.js:355:31)
    at async compileSvelte (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/@[email protected][email protected][email protected]_@[email protected]_/node_modules/@sveltejs/vite-plugin-svelte/src/utils/compile.js:85:20)
    at async TransformPluginContext.transform (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/@[email protected][email protected][email protected]_@[email protected]_/node_modules/@sveltejs/vite-plugin-svelte/src/index.js:148:20)
    at async PluginContainer.transform (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected]_@[email protected]/node_modules/vite/dist/node/chunks/dep-CB_7IfJ-.js:49096:18)
    at async loadAndTransform (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected]_@[email protected]/node_modules/vite/dist/node/chunks/dep-CB_7IfJ-.js:51929:27)
    at async instantiateModule (file:///home/midirhee12/Projects/midirhee12/personal-website/main/node_modules/.pnpm/[email protected]_@[email protected]/node_modules/vite/dist/node/chunks/dep-CB_7IfJ-.js:52874:44)

Seems to be related to:

MDsveX/packages/mdsvex/src/index.ts

Line 293 in f29f31c

ext.startsWith('.') ? ext : '.' + ext

[HannesT117]

Hi @midirhee12 I just had the same issue - there is both extension and extensions available. The first is deprecated and can only work with a (single) string. The latter (extensions) is the way to go if you want to pass an array :)