refactor: use currying to build HTML serializer

prismicio · Oct 12, 2021 · b7ba08a · b7ba08a
1 parent 542b4d9
commit b7ba08a
Showing 1 changed file with 53 additions and 55 deletions.
diff --git a/src/asHTML.ts b/src/asHTML.ts
@@ -22,60 +22,58 @@ import {
 } from "./types";
 
 /**
- * A default HTML serializer providing sensible and safe defaults for every node type
+ * Creates a default HTML serializer with a given Link Resolver providing
+ * sensible and safe defaults for every node type
  *
  * @internal
  */
-function defaultHTMLSerializer(
+const createDefaultHTMLSerializer = (
 	linkResolver: LinkResolverFunction<string> | undefined | null,
-	_type: Parameters<HTMLFunctionSerializer>[0],
-	node: Parameters<HTMLFunctionSerializer>[1],
-	content: Parameters<HTMLFunctionSerializer>[2],
-	children: Parameters<HTMLFunctionSerializer>[3],
-	_key: Parameters<HTMLFunctionSerializer>[4],
-): string {
-	switch (node.type) {
-		case Element.heading1:
-			return serializeStandardTag("h1", node, children);
-		case Element.heading2:
-			return serializeStandardTag("h2", node, children);
-		case Element.heading3:
-			return serializeStandardTag("h3", node, children);
-		case Element.heading4:
-			return serializeStandardTag("h4", node, children);
-		case Element.heading5:
-			return serializeStandardTag("h5", node, children);
-		case Element.heading6:
-			return serializeStandardTag("h6", node, children);
-		case Element.paragraph:
-			return serializeStandardTag("p", node, children);
-		case Element.preformatted:
-			return serializePreFormatted(node);
-		case Element.strong:
-			return serializeStandardTag("strong", node, children);
-		case Element.em:
-			return serializeStandardTag("em", node, children);
-		case Element.listItem:
-			return serializeStandardTag("li", node, children);
-		case Element.oListItem:
-			return serializeStandardTag("li", node, children);
-		case Element.list:
-			return serializeStandardTag("ul", node, children);
-		case Element.oList:
-			return serializeStandardTag("ol", node, children);
-		case Element.image:
-			return serializeImage(linkResolver, node);
-		case Element.embed:
-			return serializeEmbed(node);
-		case Element.hyperlink:
-			return serializeHyperlink(linkResolver, node, children);
-		case Element.label:
-			return serializeStandardTag("span", node, children);
-		case Element.span:
-		default:
-			return serializeSpan(content);
-	}
-}
+): RichTextFunctionSerializer<string> => {
+	return (_type, node, text, children, _key) => {
+		switch (node.type) {
+			case Element.heading1:
+				return serializeStandardTag("h1", node, children);
+			case Element.heading2:
+				return serializeStandardTag("h2", node, children);
+			case Element.heading3:
+				return serializeStandardTag("h3", node, children);
+			case Element.heading4:
+				return serializeStandardTag("h4", node, children);
+			case Element.heading5:
+				return serializeStandardTag("h5", node, children);
+			case Element.heading6:
+				return serializeStandardTag("h6", node, children);
+			case Element.paragraph:
+				return serializeStandardTag("p", node, children);
+			case Element.preformatted:
+				return serializePreFormatted(node);
+			case Element.strong:
+				return serializeStandardTag("strong", node, children);
+			case Element.em:
+				return serializeStandardTag("em", node, children);
+			case Element.listItem:
+				return serializeStandardTag("li", node, children);
+			case Element.oListItem:
+				return serializeStandardTag("li", node, children);
+			case Element.list:
+				return serializeStandardTag("ul", node, children);
+			case Element.oList:
+				return serializeStandardTag("ol", node, children);
+			case Element.image:
+				return serializeImage(linkResolver, node);
+			case Element.embed:
+				return serializeEmbed(node);
+			case Element.hyperlink:
+				return serializeHyperlink(linkResolver, node, children);
+			case Element.label:
+				return serializeStandardTag("span", node, children);
+			case Element.span:
+			default:
+				return serializeSpan(text);
+		}
+	};
+};
 
 /**
  * Serializes a rich text or title field to an HTML string
@@ -89,22 +87,22 @@ function defaultHTMLSerializer(
  * @returns HTML equivalent of the provided rich text or title field
  * @see Templating rich text and title fields from Prismic {@link https://prismic.io/docs/technologies/templating-rich-text-and-title-fields-javascript}
  */
-export function asHTML(
+export const asHTML = (
 	richTextField: RichTextField,
 	linkResolver?: LinkResolverFunction<string> | null,
 	htmlSerializer?: HTMLFunctionSerializer | HTMLMapSerializer | null,
-): string {
+): string => {
 	let serializer: RichTextFunctionSerializer<string>;
 	if (htmlSerializer) {
 		serializer = composeSerializers(
 			typeof htmlSerializer === "object"
 				? wrapMapSerializer(htmlSerializer)
 				: htmlSerializer,
-			defaultHTMLSerializer.bind(null, linkResolver),
+			createDefaultHTMLSerializer(linkResolver),
 		);
 	} else {
-		serializer = defaultHTMLSerializer.bind(null, linkResolver);
+		serializer = createDefaultHTMLSerializer(linkResolver);
 	}
 
 	return serialize(richTextField, serializer).join("");
-}
+};