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{"version":3,"file":"index.cjs","sources":["../src/code-block.ts"],"sourcesContent":["import { mergeAttributes, Node, textblockTypeInputRule } from '@tiptap/core'\nimport {\n Plugin,\n PluginKey,\n Selection,\n TextSelection,\n} from '@tiptap/pm/state'\n\nexport interface CodeBlockOptions {\n /**\n * Adds a prefix to language classes that are applied to code tags.\n * @default 'language-'\n */\n languageClassPrefix: string\n /**\n * Define whether the node should be exited on triple enter.\n * @default true\n */\n exitOnTripleEnter: boolean\n /**\n * Define whether the node should be exited on arrow down if there is no node after it.\n * @default true\n */\n exitOnArrowDown: boolean\n /**\n * The default language.\n * @default null\n * @example 'js'\n */\n defaultLanguage: string | null | undefined\n /**\n * Custom HTML attributes that should be added to the rendered HTML tag.\n * @default {}\n * @example { class: 'foo' }\n */\n HTMLAttributes: Record<string, any>\n}\n\ndeclare module '@tiptap/core' {\n interface Commands<ReturnType> {\n codeBlock: {\n /**\n * Set a code block\n * @param attributes Code block attributes\n * @example editor.commands.setCodeBlock({ language: 'javascript' })\n */\n setCodeBlock: (attributes?: { language: string }) => ReturnType\n /**\n * Toggle a code block\n * @param attributes Code block attributes\n * @example editor.commands.toggleCodeBlock({ language: 'javascript' })\n */\n toggleCodeBlock: (attributes?: { language: string }) => ReturnType\n }\n }\n}\n\n/**\n * Matches a code block with backticks.\n */\nexport const backtickInputRegex = /^```([a-z]+)?[\\s\\n]$/\n\n/**\n * Matches a code block with tildes.\n */\nexport const tildeInputRegex = /^~~~([a-z]+)?[\\s\\n]$/\n\n/**\n * This extension allows you to create code blocks.\n * @see https://tiptap.dev/api/nodes/code-block\n */\nexport const CodeBlock = Node.create<CodeBlockOptions>({\n name: 'codeBlock',\n\n addOptions() {\n return {\n languageClassPrefix: 'language-',\n exitOnTripleEnter: true,\n exitOnArrowDown: true,\n defaultLanguage: null,\n HTMLAttributes: {},\n }\n },\n\n content: 'text*',\n\n marks: '',\n\n group: 'block',\n\n code: true,\n\n defining: true,\n\n addAttributes() {\n return {\n language: {\n default: this.options.defaultLanguage,\n parseHTML: element => {\n const { languageClassPrefix } = this.options\n const classNames = [...(element.firstElementChild?.classList || [])]\n const languages = classNames\n .filter(className => className.startsWith(languageClassPrefix))\n .map(className => className.replace(languageClassPrefix, ''))\n const language = languages[0]\n\n if (!language) {\n return null\n }\n\n return language\n },\n rendered: false,\n },\n }\n },\n\n parseHTML() {\n return [\n {\n tag: 'pre',\n preserveWhitespace: 'full',\n },\n ]\n },\n\n renderHTML({ node, HTMLAttributes }) {\n return [\n 'pre',\n mergeAttributes(this.options.HTMLAttributes, HTMLAttributes),\n [\n 'code',\n {\n class: node.attrs.language\n ? this.options.languageClassPrefix + node.attrs.language\n : null,\n },\n 0,\n ],\n ]\n },\n\n addCommands() {\n return {\n setCodeBlock:\n attributes => ({ commands }) => {\n return commands.setNode(this.name, attributes)\n },\n toggleCodeBlock:\n attributes => ({ commands }) => {\n return commands.toggleNode(this.name, 'paragraph', attributes)\n },\n }\n },\n\n addKeyboardShortcuts() {\n return {\n 'Mod-Alt-c': () => this.editor.commands.toggleCodeBlock(),\n\n // remove code block when at start of document or code block is empty\n Backspace: () => {\n const { empty, $anchor } = this.editor.state.selection\n const isAtStart = $anchor.pos === 1\n\n if (!empty || $anchor.parent.type.name !== this.name) {\n return false\n }\n\n if (isAtStart || !$anchor.parent.textContent.length) {\n return this.editor.commands.clearNodes()\n }\n\n return false\n },\n\n // exit node on triple enter\n Enter: ({ editor }) => {\n if (!this.options.exitOnTripleEnter) {\n return false\n }\n\n const { state } = editor\n const { selection } = state\n const { $from, empty } = selection\n\n if (!empty || $from.parent.type !== this.type) {\n return false\n }\n\n const isAtEnd = $from.parentOffset === $from.parent.nodeSize - 2\n const endsWithDoubleNewline = $from.parent.textContent.endsWith('\\n\\n')\n\n if (!isAtEnd || !endsWithDoubleNewline) {\n return false\n }\n\n return editor\n .chain()\n .command(({ tr }) => {\n tr.delete($from.pos - 2, $from.pos)\n\n return true\n })\n .exitCode()\n .run()\n },\n\n // exit node on arrow down\n ArrowDown: ({ editor }) => {\n if (!this.options.exitOnArrowDown) {\n return false\n }\n\n const { state } = editor\n const { selection, doc } = state\n const { $from, empty } = selection\n\n if (!empty || $from.parent.type !== this.type) {\n return false\n }\n\n const isAtEnd = $from.parentOffset === $from.parent.nodeSize - 2\n\n if (!isAtEnd) {\n return false\n }\n\n const after = $from.after()\n\n if (after === undefined) {\n return false\n }\n\n const nodeAfter = doc.nodeAt(after)\n\n if (nodeAfter) {\n return editor.commands.command(({ tr }) => {\n tr.setSelection(Selection.near(doc.resolve(after)))\n return true\n })\n }\n\n return editor.commands.exitCode()\n },\n }\n },\n\n addInputRules() {\n return [\n textblockTypeInputRule({\n find: backtickInputRegex,\n type: this.type,\n getAttributes: match => ({\n language: match[1],\n }),\n }),\n textblockTypeInputRule({\n find: tildeInputRegex,\n type: this.type,\n getAttributes: match => ({\n language: match[1],\n }),\n }),\n ]\n },\n\n addProseMirrorPlugins() {\n return [\n // this plugin creates a code block for pasted content from VS Code\n // we can also detect the copied code language\n new Plugin({\n key: new PluginKey('codeBlockVSCodeHandler'),\n props: {\n handlePaste: (view, event) => {\n if (!event.clipboardData) {\n return false\n }\n\n // don’t create a new code block within code blocks\n if (this.editor.isActive(this.type.name)) {\n return false\n }\n\n const text = event.clipboardData.getData('text/plain')\n const vscode = event.clipboardData.getData('vscode-editor-data')\n const vscodeData = vscode ? JSON.parse(vscode) : undefined\n const language = vscodeData?.mode\n\n if (!text || !language) {\n return false\n }\n\n const { tr, schema } = view.state\n\n // prepare a text node\n // strip carriage return chars from text pasted as code\n // see: https://github.com/ProseMirror/prosemirror-view/commit/a50a6bcceb4ce52ac8fcc6162488d8875613aacd\n const textNode = schema.text(text.replace(/\\r\\n?/g, '\\n'))\n\n // create a code block with the text node\n // replace selection with the code block\n tr.replaceSelectionWith(this.type.create({ language }, textNode))\n\n if (tr.selection.$from.parent.type !== this.type) {\n // put cursor inside the newly created code block\n tr.setSelection(TextSelection.near(tr.doc.resolve(Math.max(0, tr.selection.from - 2))))\n }\n\n // store meta information\n // this is useful for other plugins that depends on the paste event\n // like the paste rule plugin\n tr.setMeta('paste', true)\n\n view.dispatch(tr)\n\n return true\n },\n },\n }),\n ]\n 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