Expose the default/lazy TOML parser

esm/custom.js

@@ -59,6 +59,7 @@ export const handleCustomType = async (node) => {
                 env,
                 onerror,
                 hooks,
+                parser,
             } = options;
 
             let error;
@@ -69,7 +70,7 @@ export const handleCustomType = async (node) => {
                     let url = configURL;
                     let cfg = node.getAttribute('config') || config || {};
                     if (!v || !cfg) {
-                        const [o, u] = resolveConfig(cfg, configURL);
+                        const [o, u] = resolveConfig(cfg, configURL, { parser });
                         cfg = await o;
                         url = u;
                         v = cfg.version || cfg.interpreter;
@@ -82,6 +83,7 @@ export const handleCustomType = async (node) => {
 
                     const xworker = XW.call(new Hook(null, hooks), worker, {
                         ...nodeInfo(node, type),
+                        parser,
                         configURL: url,
                         version: v,
                         type: runtime,

esm/exports.js

@@ -4,10 +4,11 @@ import { buffered } from './interpreter/_io.js';
 import { createProgress } from './interpreter/_utils.js';
 import { loadProgress as lP } from './interpreter/_python.js';
 import { registry } from './interpreters.js';
+import { toml } from './3rd-party.js';
 
 const loadProgress = (type, ...rest) => lP(registry.get(type), ...rest);
 
-export { buffered, createProgress, loadProgress };
+export { buffered, createProgress, loadProgress, toml };
 export * from './index.js';
 export * from './script-handler.js';
 export * from './utils.js';

esm/loader.js

@@ -22,7 +22,11 @@ export const resolveConfig = (config, configURL, options = {}) => {
     if (type === 'json') {
         options = fetch(absolute).json();
     } else if (type === 'toml') {
-        options = fetch(absolute).text().then(toml);
+        options = fetch(absolute).text().then(async value => {
+            const { parser } = options;
+            const module = parser ? await import(parser) : { parse: toml };
+            return (module.parse || module.default)(value);
+        });
     } else if (type === 'string') {
         options = parseString(config);
     } else if (type === 'object' && config) {

package.json

@@ -98,6 +98,6 @@
         "to-json-callback": "^0.1.1"
     },
     "worker": {
-        "blob": "sha256-ApE1J3NhEObM1H24FVV9LhqLlLGKcfe+iUy+8s/CKJE="
+        "blob": "sha256-sbA8E5hS+A6qJj6Hff1Hz/8P9X6JwySkRYqkLfX+gDw="
     }
 }