svelte-check doesn't ignore node_modules/ when I ask it to

[cor]

My tsconfig.json is pretty much the default for a SvelteKit project, with an added exclude property:

{
	"compilerOptions": {
		"strict": true,
		"noEmitOnError": true,
		"moduleResolution": "node",
		"module": "es2020",
		"lib": ["es2020"],
		"target": "es2019",
		"importsNotUsedAsValues": "error",
		"isolatedModules": true,
		"resolveJsonModule": true,
		"sourceMap": true,
		"esModuleInterop": true,
		"skipLibCheck": true,
		"forceConsistentCasingInFileNames": true,
		"baseUrl": ".",
		"allowJs": true,
		"checkJs": true,
		"paths": {
			"$lib": ["src/lib"],
			"$lib/*": ["src/lib/*"]
		}
	},
	"include": ["src/**/*.d.ts", "src/**/*.js", "src/**/*.ts", "src/**/*.svelte"],
	"exclude": ["node_modules/", ".svelte-kit/"],
}

I'm also using the --ignore flag in my package.json:

"scripts": {
    "dev": "svelte-kit dev",
    "build": "svelte-kit build",
    "preview": "svelte-kit preview",
    "check": "svelte-check --tsconfig ./tsconfig.json --ignore \".svelte-kit,node_modules\"",
    "check:watch": "svelte-check --tsconfig ./tsconfig.json --watch --ignore \".svelte-kit,node_modules\"",
    "lint": "prettier --check --plugin-search-dir=. . && eslint --ignore-path .gitignore .",
    "format": "prettier --write --plugin-search-dir=. ."
},

However, when I run npm run check, I still get the following errors, which originate from node_modules/:

/Users/cor/Developer/project/node_modules/svelte-fa/src/fa.svelte:86:9
Error: This condition will always return 'false' since the types 'boolean' and 'string' have no overlap. (js)
    let flipY = 1;
    if (flip == 'horizontal') {
      flipX = -1;


/Users/cor/Developer/project/node_modules/svelte-fa/src/fa.svelte:88:16
Error: This condition will always return 'false' since the types 'boolean' and 'string' have no overlap. (js)
      flipX = -1;
    } else if (flip == 'vertical') {
      flipY = -1;


/Users/cor/Developer/project/node_modules/svelte-fa/src/fa.svelte:104:6
Error: Variable 'i' implicitly has an 'any' type. (js)

{#if i[4]}
  <svg


/Users/cor/Developer/project/node_modules/svelte-fa/src/fa.svelte:108:12
Error: Variable 's' implicitly has an 'any' type. (js)
    class={clazz}
    style={s}
    viewBox={`0 0 ${i[0]} ${i[1]}`}


/Users/cor/Developer/project/node_modules/svelte-fa/src/fa.svelte:109:21
Error: Variable 'i' implicitly has an 'any' type. (js)
    style={s}
    viewBox={`0 0 ${i[0]} ${i[1]}`}
    aria-hidden="true"


/Users/cor/Developer/project/node_modules/svelte-fa/src/fa.svelte:109:29
Error: Variable 'i' implicitly has an 'any' type. (js)
    style={s}
    viewBox={`0 0 ${i[0]} ${i[1]}`}
    aria-hidden="true"


... and many more

They are coming from fa.svelte (svelte-fa), which I'm importing like this:

import Fa from 'svelte-fa/src/fa.svelte';

Why is this happening?

[dummdidumm]

Duplicate of #1056 and #1074 . Basically, we need to adjust some behavior there to not type-check node_module files.