v1 checkpoint

This commit is the initial checkpoint for a functioning converter with
all tests passing.

dist/hopdown.d.ts

@@ -0,0 +1,70 @@
+import type { Token, TagCollectionType } from './types';
+export declare function escapeHtml(source: string): string;
+/**
+ * A configurable markdown <=> HTML converter.
+ *
+ * Examples:
+ *
+ *   const hopdown = new HopDown();
+ *
+ *   const html = hopdown.toHTML('**bold**');
+ *   html === '<p><strong>bold</strong></p>';
+ *
+ *   const markdown = hopdown.toMarkdown(html);
+ *   markdown === '**bold**';
+ *
+ *   const node = hopdown.toEditorNode('**bold**');
+ *   (node as HTMLElement).outerHTML === (
+ *      "<div>" +
+ *      "<span class='delim strong'>**</span>" +
+ *      "bold" +
+ *      "<span class='delim strong'>" +
+ *      "</div>"
+ *   );
+ */
+export declare class HopDown {
+    tags: TagCollectionType;
+    private tokenizer;
+    constructor(tags?: TagCollectionType | null);
+    /**
+     * Convert a markdown string to tokens.
+     */
+    tokenize(source: string): Token[];
+    /**
+     * Convert an HTML string or a DocumentFragment to markdown.
+     */
+    toMarkdown: (html: string | DocumentFragment) => string;
+    /**
+     * Convert a markdown string to a DocumentFragment consisting of wysiwyg editor nodes.
+     */
+    toEditorNode: (markdown: string) => DocumentFragment;
+    toHTML: (markdown: string) => string;
+    /**
+     * Recursive entrypoint for converting markdown to html.
+     */
+    inlineToHTML: (markdown: string) => string;
+    /**
+     * Recursive entrypoint for converting markdown to editor nodes.
+     */
+    private inlineToEditorNodes;
+    /**
+     * Convert an HTML node to a markdown string. Used by toMarkdown().
+     */
+    private nodeToMarkdown;
+    /**
+     * Convert a token stream to editor nodes.
+     */
+    private tokensToEditorNodes;
+    /**
+     * Convert a token stream to HTML. Matches open/close delimiter
+     * pairs and wraps their content in the appropriate HTML tags.
+     * Unmatched delimiters are emitted as literal text.
+     */
+    private tokensToHTML;
+    /**
+     * Match open/close delimiter pairs in a token stream. Unmatched
+     * openers/closers are converted to text tokens so they render
+     * as literal characters.
+     */
+    private pairDelimiters;
+}