fix: resolve relative paths

imports such as inline!../path/to/file don't work. Also it doesn't allow to import the same file with the same path without the prefix.

Author: superle3

src/index.ts

@@ -1,40 +1,41 @@
-import path from 'path'
+import { readFile } from 'fs/promises'
 
 type Options = {
 	prefix?: string
 }
+const PLUGIN_ID = 'rollup-plugin-inline-code'
 
 export default (options: Options = {}) => {
 	const { prefix = 'inline!' } = options
 
-	const paths = new Map()
-
 	return {
 		name: 'rollup-plugin-inline-code',
-		resolveId: (sourcePath: string) => {
+		resolveId: async function (
+			sourcePath: string,
+			importer: string | undefined,
+			options: {
+				attribute: Record<string, string>
+				custom: { [plugin: string]: any }
+				isEntry: boolean
+			},
+		): Promise<{ id: string; moduleSideEffects: boolean } | null> {
 			if (sourcePath.includes(prefix)) {
 				const sourceArray = sourcePath.split(prefix)
 				const name = sourceArray[sourceArray.length - 1]
-
-				// target - name
-				paths.set(name, name)
-
-				return name
+				//@ts-ignore
+				const resolvePath = await this.resolve(name, importer, options)
+				return { id: `\0${PLUGIN_ID}:${resolvePath.id}`, moduleSideEffects: true }
 			}
 			return null
 		},
-		transform: (codeContent: string, id: string | null) => {
-			if (!paths.has(id)) {
+		load: async function (id: string) {
+			if (!id.startsWith(`\0${PLUGIN_ID}:`)) {
 				return null
 			}
 
-			const code = `export default ${JSON.stringify(codeContent.trim())};`
-			const map = { mappings: '' }
-
-			return {
-				code,
-				map,
-			}
+			const filePath = id.slice(`\0${PLUGIN_ID}:`.length)
+			const code = await readFile(filePath, 'utf-8')
+			return `export default ${JSON.stringify(code)};`
 		},
 	}
 }