Use plain objects for file formatters.

Author: tech4him1

src/formats/__tests__/frontmatter.spec.js

@@ -1,9 +1,7 @@
-import Frontmatter from '../frontmatter';
+import FrontmatterFormatter from '../frontmatter';
 
 jest.mock("../../valueObjects/AssetProxy.js");
 
-const FrontmatterFormatter = new Frontmatter();
-
 describe('Frontmatter', () => {
   it('should parse YAML with --- delimiters', () => {
     expect(

src/formats/formats.js

@@ -1,8 +1,8 @@
 import { partial } from 'lodash';
-import YAML from './yaml';
-import TOML from './toml';
-import JSONFormatter from './json';
-import Frontmatter from './frontmatter';
+import yamlFormatter from './yaml';
+import tomlFormatter from './toml';
+import jsonFormatter from './json';
+import FrontmatterFormatter from './frontmatter';
 
 export const formatToExtension = format => ({
   markdown: 'md',
@@ -11,11 +11,6 @@ export const formatToExtension = format => ({
   html: 'html',
 }[format]);
 
-const yamlFormatter = new YAML();
-const tomlFormatter = new TOML();
-const jsonFormatter = new JSONFormatter();
-const FrontmatterFormatter = new Frontmatter();
-
 function formatByType(type) {
   // Right now the only type is "editorialWorkflow" and
   // we always returns the same format

src/formats/frontmatter.js

@@ -1,8 +1,6 @@
 import matter from 'gray-matter';
-import TOML from './toml';
-import YAML from './yaml';
-
-const tomlFormatter = new TOML();
+import tomlFormatter from './toml';
+import yamlFormatter from './yaml';
 
 const parsers = {
   toml: input => tomlFormatter.fromFile(null, input),
@@ -37,22 +35,22 @@ function inferFrontmatterFormat(str) {
   }
 }
 
-export default class Frontmatter {
+export default {
   fromFile(collectionOrEntity, content) {
     const result = matter(content, { engines: parsers, ...inferFrontmatterFormat(content) });
     return {
       ...result.data,
       body: result.content,
     };
-  }
+  },
 
   toFile(collectionOrEntity, data, sortedKeys) {
     const { body, ...meta } = data;
 
     // always stringify to YAML
     const parser = {
       stringify(metadata) {
-        return new YAML().toFile(collectionOrEntity, metadata, sortedKeys);
+        return yamlFormatter.toFile(collectionOrEntity, metadata, sortedKeys);
       },
     };
     return matter.stringify(body, meta, { language: "yaml", delimiters: "---", engines: { yaml: parser } });

src/formats/json.js

@@ -1,7 +1,7 @@
-export default class JSONFormatter {
+export default {
   fromFile(collectionOrEntity, content) {
     return JSON.parse(content);
-  }
+  },
 
   toFile(collectionOrEntity, data) {
     return JSON.stringify(data);

src/formats/toml.js

@@ -15,10 +15,10 @@ const outputReplacer = (key, value) => {
   return false;
 };
 
-export default class TOML {
+export default {
   fromFile(collectionOrEntity, content) {
     return toml.parse(content);
-  }
+  },
 
   toFile(collectionOrEntity, data, sortedKeys = []) {
     return tomlify.toToml(data, { replace: outputReplacer, sort: sortKeys(sortedKeys) });

src/formats/yaml.js

@@ -36,10 +36,10 @@ const OutputSchema = new yaml.Schema({
   explicit: yaml.DEFAULT_SAFE_SCHEMA.explicit,
 });
 
-export default class YAML {
+export default {
   fromFile(collectionOrEntity, content) {
     return yaml.safeLoad(content);
-  }
+  },
 
   toFile(collectionOrEntity, data, sortedKeys = []) {
     return yaml.safeDump(data, { schema: OutputSchema, sortKeys: sortKeys(sortedKeys) });