Get License from package.json

Create json file from licenses

{
	"scripts": {
		"generate-license-page": "npx license-checker --json --customPath src/routes/license/template.json  --out src/routes/license/license.json"
	}
}

Create a template file to define the structure

src/routes/license/template.json

{
    "licenses": "",
    "repository": ",",
    "licenseFile": "none"
}

Create a page to show the licenses

src/routes/license/+page.svelte

<script>
	import licenses from './license.json';

	let licensesArray = convertObjectToArray(licenses);

	licensesArray = [
		...licensesArray,
		{
			name: 'Website',
			data: {
				licenses: 'CUSTOM',
				licenseText:
					'License text for custom licenses here',
				copyright: '',
				repository: ''
			}
		}
	];
	type License = {
		/** Package name. */
		name: string;
		data: {
			/** License type. */
			licenses: string | undefined;
			/** Repository URL. */
			repository: string | undefined;
			/** License text. */
			licenseText: string | undefined;
			/** Copyright text. */
			copyright: string | undefined;
		};
	};

	function convertObjectToArray(obj: object) {
		let resultArray = [];

		for (let key in obj) {
			if (obj.hasOwnProperty(key)) {
				let entry = {
					name: key,
					//@ts-expect-error
					data: obj[key]
				};

				resultArray.push(entry);
			}
		}

		return resultArray as License[];
	}
</script>

<p class="my-4 text-center text-4xl font-bold">Licenses</p>

<div class="flex flex-col gap-4">
	{#each licensesArray as { data: { licenses, repository, copyright, licenseText }, name }}
		<div class="rounded-xl border border-zinc-700 p-4">
			<a href={repository} class="text-blue-500 hover:underline">{licenses} - {name}</a>
			{#if copyright}
				<p class="mt-2">{copyright}</p>
			{/if}
			<div class=" mt-2 w-full border-b border-zinc-700"></div>
			{#if licenseText}
				<details>
					<summary
						class="mt-4 cursor-pointer text-sm font-medium text-zinc-500 hover:text-zinc-700"
					>
						View License Text
					</summary>
					<div class="mt-2">
						<p class="whitespace-pre-wrap break-words text-sm" style="white-space: pre-wrap;">
							{licenseText}
						</p>
					</div>
				</details>
			{/if}
		</div>
	{/each}
</div>