4 files changed, 10 insertions, 186 deletions
diff --git a/src/serializers/to_json.test.ts b/src/serializers/to_json.test.ts
index 4184ab1..78f704a 100644
--- a/src/serializers/to_json.test.ts
+++ b/src/serializers/to_json.test.ts
@@ -2,11 +2,11 @@ import FlatMatter from "../flatmatter.ts";
 import ToJson from "./to_json.ts";
 
 test("Single-level configuration", () => {
-  const fm = new FlatMatter(
-    'a: true\nb: false\nc: 1\nd: 12.5\nf: "some string"'
+  const config = FlatMatter.config(
+    'a: true\nb: false\nc: 1\nd: 12.5\nf: "some string"',
   );
 
   const equal = '{"a":true,"b":false,"c":1,"d":12.5,"f":"some string"}';
 
-  expect(fm.serialize(new ToJson())).toStrictEqual(equal);
+  expect(FlatMatter.serialize(config, ToJson)).toStrictEqual(equal);
 });
diff --git a/src/serializers/to_json.ts b/src/serializers/to_json.ts
index 30cf417..c61a98f 100644
--- a/src/serializers/to_json.ts
+++ b/src/serializers/to_json.ts
@@ -1,7 +1,9 @@
 import type { Serializer } from "../flatmatter.ts";
 
-export default class ToJson implements Serializer<string> {
-  serialize(config: Record<string, unknown>): string {
-    return JSON.stringify(config);
-  }
-}
+const ToJson: Serializer<string> = (
+  config: Record<string, unknown>,
+): string => {
+  return JSON.stringify(config);
+};
+
+export default ToJson;
diff --git a/src/serializers/to_object.test.ts b/src/serializers/to_object.test.ts
deleted file mode 100644
index 28cb78e..0000000
--- a/src/serializers/to_object.test.ts
+++ /dev/null
@@ -1,171 +0,0 @@
-import FlatMatter, { type FlatMatterFn } from "../flatmatter.ts";
-import ToObject from "./to_object.ts";
-
-test("Single-level configuration", () => {
-  const fm = new FlatMatter(
-    'a: true\nb: false\nc: 1\nd: 12.5\nf: "some string"'
-  );
-
-  expect(fm.serialize(new ToObject())).toStrictEqual({
-    a: true,
-    b: false,
-    c: 1,
-    d: 12.5,
-    f: "some string",
-  });
-});
-
-test("Two-level configuration", () => {
-  const fm = new FlatMatter(
-    'a.a: true\nb.b: false\nc.c: 1\nd.d: 12.5\nf.f: "some string"'
-  );
-
-  expect(fm.serialize(new ToObject())).toStrictEqual({
-    a: {
-      a: true,
-    },
-    b: {
-      b: false,
-    },
-    c: {
-      c: 1,
-    },
-    d: {
-      d: 12.5,
-    },
-    f: {
-      f: "some string",
-    },
-  });
-});
-
-test("Simple function usage", () => {
-  class ToUpper implements FlatMatterFn {
-    name = "to-upper";
-
-    compute(input: string): unknown {
-      return input.toUpperCase();
-    }
-  }
-
-  const fm = new FlatMatter('a: (to-upper "value")', [new ToUpper()]);
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "VALUE",
-  });
-});
-
-test("Piped function by reference usage", () => {
-  class ToUpper implements FlatMatterFn {
-    name = "to-upper";
-
-    compute(input: string): unknown {
-      return input.toUpperCase();
-    }
-  }
-
-  const fm = new FlatMatter('a: "value" / to-upper', [new ToUpper()]);
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "VALUE",
-  });
-});
-
-test("Piped function by call usage", () => {
-  class ToUpper implements FlatMatterFn {
-    name = "to-upper";
-
-    compute(input: string, additional: number): unknown {
-      return `${input.toUpperCase()}-${additional}`;
-    }
-  }
-
-  const fm = new FlatMatter('a: "value" / (to-upper 123)', [new ToUpper()]);
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "VALUE-123",
-  });
-});
-
-test("Invalid value in pipe", () => {
-  const fm = new FlatMatter('a: "value" / / asd');
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({});
-});
-
-test("Invalid value in pipe, 2", () => {
-  const fm = new FlatMatter('a: "value" / asd');
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "value",
-  });
-});
-
-test("Only piped functions", () => {
-  class FirstFn implements FlatMatterFn {
-    name = "first-fn";
-
-    compute(input: string): unknown {
-      return input.toUpperCase();
-    }
-  }
-
-  class SecondFn implements FlatMatterFn {
-    name = "second-fn";
-
-    compute(input: string): unknown {
-      return `${input}-passed-by-second`;
-    }
-  }
-
-  const fm = new FlatMatter('a: (first-fn "value / here") / second-fn', [
-    new FirstFn(),
-    new SecondFn(),
-  ]);
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "VALUE / HERE-passed-by-second",
-  });
-});
-
-test("Function call without any args", () => {
-  class ToUpper implements FlatMatterFn {
-    name = "to-upper";
-
-    compute(input: string): unknown {
-      return input.toUpperCase();
-    }
-  }
-
-  const fm = new FlatMatter('a: "value" / (to-upper)', [new ToUpper()]);
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "VALUE",
-  });
-});
-
-test("Function call using multiple strings with spaces as arg", () => {
-  class ToUpper implements FlatMatterFn {
-    name = "to-upper";
-
-    compute(input: string): unknown {
-      return input.toUpperCase();
-    }
-  }
-
-  const fm = new FlatMatter('a: (to-upper "value goes here" "and here")', [
-    new ToUpper(),
-  ]);
-  const config = fm.serialize(new ToObject());
-
-  expect(config).toStrictEqual({
-    a: "VALUE GOES HERE",
-  });
-});
diff --git a/src/serializers/to_object.ts b/src/serializers/to_object.ts
deleted file mode 100644
index 79b2886..0000000
--- a/src/serializers/to_object.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import type { Serializer } from "../flatmatter.ts";
-
-export default class ToObject implements Serializer<Record<string, unknown>> {
-  serialize(config: Record<string, unknown>): Record<string, unknown> {
-    return config;
-  }
-}