matchers.json: init

Author: figsoda

docs/src/api/matchers.md

@@ -41,6 +41,14 @@ Type: `String -> ({ self, super, root, ... } -> Path -> a }) -> Matcher`
 Matches files with the given extension.
 `matchers.extension "foo"` matches `a.foo` and `a.b.foo`, but not `.foo`.
 
+## `matchers.json`
+
+Source: [`src/matchers/json.nix`](https://github.com/nix-community/haumea/blob/main/src/matchers/json.nix)
+
+Type: `Matcher`
+
+Matches all JSON files and loads them using `lib.importJSON`.
+
 ## `matchers.nix`
 
 Source: [`src/matchers/nix.nix`](https://github.com/nix-community/haumea/blob/main/src/matchers/nix.nix)

src/matchers/json.nix

@@ -0,0 +1,3 @@
+{ lib, super }:
+
+super.extension "json" (_: lib.importJSON)

tests/matchers/__fixture/baz/bar.json

@@ -0,0 +1,3 @@
+{
+  "answer": 42
+}

tests/matchers/expected.nix

@@ -4,6 +4,7 @@
   baz = {
     ".nix" = ./__fixture/baz/.nix;
     "foo.yml." = ./__fixture/baz/foo.yml.;
+    bar.answer = 42;
     me."me.yaml" = "baz.me";
   };
   rest = 42;

tests/matchers/expr.nix

@@ -27,6 +27,7 @@ haumea.load {
   loader = [
     (matchers.regex ''^(.+)\.(yaml|yml)$'' fakeLoadYaml)
     (matchers.nix haumea.loaders.default)
+    matchers.json
     (matchers.always haumea.loaders.path)
   ];
 }