index.ts

import type { Plugin } from "vite"
import { createFilter } from "@rollup/pluginutils"
import { createMarkdownProcessor } from "./markdown"
import type { Options } from "./options"
import { resolveOptions } from "./options"

export type { Options }
/**
 * Creates vite-plugin-svelte-md
 */
export default function (options: Options = {}): Plugin {
    const resolvedOptions = resolveOptions(options)
    const mdToSvelte = createMarkdownProcessor(resolvedOptions)

    const filter = createFilter(
        resolvedOptions.include || /\.md$/,
        resolvedOptions.exclude,
    )

    return {
        name: "vite-plugin-svelte-md",
        enforce: "pre",
        transform(raw, id) {
            if (!filter(id)) return undefined
            try {
                return mdToSvelte(id, raw)
            } catch (e: any) {
                this.error(e)
            }
            return undefined
        },
        handleHotUpdate(ctx) {
            if (!filter(ctx.file)) return

            const defaultRead = ctx.read
            ctx.read = async function () {
                return mdToSvelte(ctx.file, await defaultRead())
            }
        },
    }
}