Merge pull request #141 from ianmetcalf/hbs-precompile-options

Adds config to pass options to handlebars precompile

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 ### Added
 - Added `ignoreHelpers` option to skip automatic lookup/bundling of helpers
+- Added `precompileOptions` to pass options to handlebars precompile
+- Your feature here!
 
 ## [1.5.0] - 2017-04-20
 
@@ -19,7 +21,6 @@
 - Fixed resolving relative helpers on first pass when helper directories are given
 - Added `ignorePartials` option to skip automatic lookup/bundling of partials
 - Added `compat` option to enable Mustache lookup compatibility.
-- Your feature here!
 - Added `config` option to query so that configs can be specified in webpack
   config object or the loader query. Defaults to `handlebarsLoader`
 - Added `partialResolver` config option to override the default partial

README.md

@@ -61,10 +61,9 @@ The following query (or config) options are supported:
  - *exclude*: Defines a regex that will exclude paths from resolving. This can be used to prevent helpers from being resolved to modules in the `node_modules` directory.
  - *debug*: Shows trace information to help debug issues (e.g. resolution of helpers).
  - *partialDirs*: Defines additional directories to be searched for partials. Allows partials to be defined in a directory and used globally without relative paths. See [example](https://github.com/altano/handlebars-loader/tree/master/examples/partialDirs)
- - *preventIndent*: Prevent partials from being indented inside their parent template.
  - *ignorePartials*: Prevents partial references from being fetched and bundled. Useful for manually loading partials at runtime.
  - *ignoreHelpers*: Prevents helper references from being fetched and bundled. Useful for manually loading helpers at runtime.
- - *compat*: Enables recursive field lookup for Mustache compatibility. See the Handlebars.js [documentation](https://github.com/wycats/handlebars.js#differences-between-handlebarsjs-and-mustache) for more information.
+ - *precompileOptions*: Options passed to handlebars precompile. See the Handlebars.js [documentation](http://handlebarsjs.com/reference.html#base-precompile) for more information.
  - *config*: Tells the loader where to look in the webpack config for configurations for this loader. Defaults to `handlebarsLoader`.
  - *config.partialResolver* You can specify a function to use for resolving partials. To do so, add to your webpack config:
     ```js

index.js

@@ -36,6 +36,8 @@ module.exports = function(source) {
     throw new Error('Handlebars compiler version does not match runtime version');
   }
 
+  var precompileOptions = query.precompileOptions || {};
+
   // Possible extensions for partials
   var extensions = query.extensions;
   if (!extensions) {
@@ -55,12 +57,11 @@ module.exports = function(source) {
   var foundUnclearStuff = {};
   var knownHelpers = {};
 
-  var queryKnownHelpers = query.knownHelpers;
-  if (queryKnownHelpers) {
-    [].concat(queryKnownHelpers).forEach(function(k) {
+  [].concat(query.knownHelpers, precompileOptions.knownHelpers).forEach(function(k) {
+    if (k && typeof k === 'string') {
       knownHelpers[k] = true;
-    });
-  }
+    }
+  });
 
   var inlineRequires = query.inlineRequires;
   if (inlineRequires) {
@@ -168,12 +169,14 @@ module.exports = function(source) {
 
     try {
       if (source) {
-        template = hb.precompile(source, {
-          knownHelpersOnly: firstCompile ? false : true,
+        template = hb.precompile(source, assign({
+          knownHelpersOnly: !firstCompile,
+          // TODO: Remove these in next major release
+          preventIndent: !!query.preventIndent,
+          compat: !!query.compat
+        }, precompileOptions, {
           knownHelpers: knownHelpers,
-          preventIndent: query.preventIndent,
-          compat: query.compat ? true : false
-        });
+        }));
       }
     } catch (err) {
       return loaderAsyncCallback(err);