feat: show default values in docs (#10465)

Author: Qjuh

packages/api-extractor/src/generators/ApiModelGenerator.ts

@@ -114,7 +114,7 @@ interface DocgenEventJson {
 }
 
 interface DocgenParamJson {
-	default?: string;
+	default?: boolean | number | string;
 	description: string;
 	name: string;
 	nullable?: boolean;
@@ -155,7 +155,7 @@ interface DocgenMethodJson {
 interface DocgenPropertyJson {
 	abstract?: boolean;
 	access?: DocgenAccess;
-	default?: string;
+	default?: boolean | number | string;
 	deprecated?: DocgenDeprecated;
 	description: string;
 	meta: DocgenMetaJson;
@@ -1264,7 +1264,7 @@ export class ApiModelGenerator {
 				const apiItemMetadata: ApiItemMetadata = this._collector.fetchApiItemMetadata(astDeclaration);
 				const docComment: tsdoc.DocComment | undefined = jsDoc
 					? this._tsDocParser.parseString(
-							`/**\n * ${this._fixLinkTags(jsDoc.description) ?? ''}${jsDoc.default === undefined ? '' : ` (default: ${this._escapeSpecialChars(jsDoc.default)})`}\n${
+							`/**\n * ${this._fixLinkTags(jsDoc.description) ?? ''}${jsDoc.default ? ` (default: ${this._escapeSpecialChars(jsDoc.default)})` : ''}\n${
 								'see' in jsDoc ? jsDoc.see.map((see) => ` * @see ${see}\n`).join('') : ''
 							}${'readonly' in jsDoc && jsDoc.readonly ? ' * @readonly\n' : ''}${
 								'deprecated' in jsDoc && jsDoc.deprecated
@@ -1342,7 +1342,7 @@ export class ApiModelGenerator {
 				const apiItemMetadata: ApiItemMetadata = this._collector.fetchApiItemMetadata(astDeclaration);
 				const docComment: tsdoc.DocComment | undefined = jsDoc
 					? this._tsDocParser.parseString(
-							`/**\n * ${this._fixLinkTags(jsDoc.description) ?? ''}${jsDoc.default === undefined ? '' : `\n * @defaultValue ${this._escapeSpecialChars(jsDoc.default)}`}\n${
+							`/**\n * ${this._fixLinkTags(jsDoc.description) ?? ''}${jsDoc.default ? ` (default: ${this._escapeSpecialChars(jsDoc.default)})` : ''}\n${
 								'see' in jsDoc ? jsDoc.see.map((see) => ` * @see ${see}\n`).join('') : ''
 							}${'readonly' in jsDoc && jsDoc.readonly ? ' * @readonly\n' : ''}${
 								'deprecated' in jsDoc && jsDoc.deprecated
@@ -1746,6 +1746,14 @@ export class ApiModelGenerator {
 		return sourceLocation;
 	}
 
+	private _escapeSpecialChars(input: boolean | number | string) {
+		if (typeof input !== 'string') {
+			return input;
+		}
+
+		return input.replaceAll(/(?<char>[{}])/g, '\\$<char>');
+	}
+
 	private _fixLinkTags(input?: string): string | undefined {
 		return input
 			?.replaceAll(linkRegEx, (_match, _p1, _p2, _p3, _p4, _p5, _offset, _string, groups) => {
@@ -1823,7 +1831,7 @@ export class ApiModelGenerator {
 			isOptional: Boolean(prop.nullable),
 			isReadonly: Boolean(prop.readonly),
 			docComment: this._tsDocParser.parseString(
-				`/**\n * ${this._fixLinkTags(prop.description) ?? ''}\n${
+				`/**\n * ${this._fixLinkTags(prop.description) ?? ''}${prop.default ? ` (default: ${this._escapeSpecialChars(prop.default)})` : ''}\n${
 					prop.see?.map((see) => ` * @see ${see}\n`).join('') ?? ''
 				}${prop.readonly ? ' * @readonly\n' : ''} */`,
 			).docComment,

packages/scripts/src/generateSplitDocumentation.ts

@@ -39,6 +39,7 @@ import {
 } from '@discordjs/api-extractor-model';
 import { DocNodeKind, SelectorKind, StandardTags } from '@microsoft/tsdoc';
 import type {
+	DocEscapedText,
 	DocNode,
 	DocNodeContainer,
 	DocDeclarationReference,
@@ -307,6 +308,11 @@ function itemTsDoc(item: DocNode, apiItem: ApiItem) {
 					kind: DocNodeKind.PlainText,
 					text: (node as DocPlainText).text,
 				};
+			case DocNodeKind.EscapedText:
+				return {
+					kind: DocNodeKind.PlainText,
+					text: (node as DocEscapedText).decodedText,
+				};
 			case DocNodeKind.Section:
 			case DocNodeKind.Paragraph:
 				return (node as DocNodeContainer).nodes.map((node) => createNode(node));