Merge branch 'master' of https://github.com/mnater/hyphenopoly

docs/Node-Module.md

@@ -122,6 +122,25 @@ const hyphenator = hyphenopoly.config({
 ````
 This is useful if the module is transformed to a script used in a web browser (e.g. by using [browserify](http://browserify.org)).
 
+You can also add your custom loader to handle the load of the language files. To do this, just set a callback function as a `loader`.
+It should return a `promise` that resolves with a buffer of the language file.
+
+````javascript
+async function loader(file) {
+  if (process.browser) {
+    const res = await fetch(file)
+    return res.arrayBuffer()
+  }
+  const fs = require('fs/promises')
+  return fs.readFile(file)
+}
+
+const hyphenator = hyphenopoly.config({
+    "require": […],
+    "loader": loader
+});
+
+````
 ### other options
 For documentation about the other options see the `Hyphenopoly.js`-documentation:
 

hyphenopoly.module.js

@@ -121,7 +121,12 @@ H.supportedLanguages = [
  * @returns {undefined}
  */
 function readFile(file, cb, sync) {
-    if (H.c.loader === "fs") {
+    if (typeof H.c.loader === "function") {
+        H.c.loader(file).then(
+            (res) => { cb(null, res); }, 
+            (err) => { cb(err); }
+        );
+    } else if (H.c.loader === "fs") {
         /* eslint-disable security/detect-non-literal-fs-filename */
         if (sync) {
             return loader.readFileSync(file);