The "path" argument must be of type string. Received undefined

[Jafo232]

I am having a problem with this. When I run the test script as described:

\Spatie\ShikiPhp\Shiki::highlight(
    code: '<?php echo "Hello World"; ?>',
    language: 'php',
    theme: 'github-light',
);

I get:

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
at new NodeError (node:internal/errors:399:5)
at validateString (node:internal/validators:163:11)
at Object.isAbsolute (node:path:1157:5)
at _resolvePath (/var/www/html/node_modules/shiki/dist/index.js:2314:14)
at _fetchAssets (/var/www/html/node_modules/shiki/dist/index.js:2322:16)
at _fetchJSONAssets (/var/www/html/node_modules/shiki/dist/index.js:2332:29)
at fetchGrammar (/var/www/html/node_modules/shiki/dist/index.js:2365:16)
at Resolver.loadGrammar (/var/www/html/node_modules/shiki/dist/index.js:2455:21)
at Registry._doLoadSingleGrammar (/var/www/html/node_modules/vscode-textmate/release/main.js:1:29372)
at Registry._loadSingleGrammar (/var/www/html/node_modules/vscode-textmate/release/main.js:1:29257) {
code: 'ERR_INVALID_ARG_TYPE'
}

I am using node v16.20.0 in production and 18.x in dev. Same issue in both environments. It seems to be happening at this line in shiki.js:

await highlighter.loadLanguage({ ...spec, ...loadLanguage(lang), name: lang });

I am at a loss here. Any help would be appreciated. I am using this in conjunction with the laravel-markdown product.

[Jafo232]

Ok, this resolved itself when I used the -D flag when installing shiki:

npm install -D shiki

Not sure why making this a dev dependency made any difference at all..