在選定區域插入新節點時，Slate.js 會引發錯誤

Question

相關代碼塊：

        <Slate editor={editor} value={value} onChange={value => {
            setValue(value);

            const { selection } = editor;
            // if nothing is currently selected under the cursor
            if (selection && Range.isCollapsed(selection)) {
                const [start] = Range.edges(selection);
                // if the two characters beforce the cursor are {{, select them and replace with a template block
                const before = Editor.before(editor, start, {distance: 2})
                const beforeRange = before && Editor.range(editor, before, start)
                const beforeText = beforeRange && Editor.string(editor, beforeRange)
                const beforeMatch = beforeText && beforeText.match(/\{\{/);
                if (beforeMatch) {
                    Transforms.select(editor, beforeRange as Location);
                    insertTemplateBlock(editor, {name: "test"})
                }
            }
        }}>
...
</Slate>

export const insertTemplateBlock = (editor: Editor, {name, opts, defaultValue}: TemplateBlockProps) => {
    const templateBlock = { type: "template-block", name, opts, defaultValue, children: [{text: ''}] }
    Transforms.insertNodes(editor, templateBlock);
    Transforms.move(editor);
}

具體來說，它總是在insertTemplateBlock function 內的第二行中斷，並給出如下錯誤：

Cannot find a descendant at path [0,2] in node: {"children":[{"type":"paragraph","children":[{"text":"Thing is working {{"}]}],"operations":[{"type":"insert_text","path":[0,0],"offset":18,"text":"{"},{"type":"set_selection","properties":{"anchor":{"path":[0,0],"offset":19}},"newProperties":{"anchor":{"path":[0,0],"offset":17}}},{"type":"remove_text","path":[0,0],"offset":17,"text":"{{"},{"type":"insert_node","path":[0,1],"node":{"type":"template-block","name":"test","children":[{"text":""}]}},{"type":"set_selection","properties":{"anchor":{"path":[0,0],"offset":17},"focus":{"path":[0,0],"offset":17}},"newProperties":{"anchor":{"path":[0,1,0],"offset":0},"focus":{"path":[0,1,0],"offset":0}}},{"type":"insert_node","path":[0,2],"node":{"text":""}},{"type":"set_selection","properties":{"anchor":{"path":[0,1,0],"offset":0},"focus":{"path":[0,1,0],"offset":0}},"newProperties":{"anchor":{"path":[0,2],"offset":0},"focus":{"path":[0,2],"offset":0}}}],"selection":{"anchor":{"path":[0,2],"offset":0},"focus":{"path":[0,2],"offset":0}},"marks":null,"history":{"undos":[[{"type":"set_selection","properties":null,"newProperties":{"anchor":{"path":[0,0],"offset":0},"focus":{"path":[0,0],"offset":0}}}],[{"type":"insert_text","path":[0,0],"offset":0,"text":"T"},{"type":"insert_text","path":[0,0],"offset":1,"text":"h"},{"type":"insert_text","path":[0,0],"offset":2,"text":"i"},{"type":"insert_text","path":[0,0],"offset":3,"text":"n"},{"type":"insert_text","path":[0,0],"offset":4,"text":"g"},{"type":"insert_text","path":[0,0],"offset":5,"text":" "},{"type":"insert_text","path":[0,0],"offset":6,"text":"i"},{"type":"insert_text","path":[0,0],"offset":7,"text":"s"},{"type":"insert_text","path":[0,0],"offset":8,"text":" "},{"type":"insert_text","path":[0,0],"offset":9,"text":"w"},{"type":"insert_text","path":[0,0],"offset":10,"text":"o"},{"type":"insert_text","path":[0,0],"offset":11,"text":"r"},{"type":"insert_text","path":[0,0],"offset":12,"text":"k"},{"type":"insert_text","path":[0,0],"offset":13,"text":"i"},{"type":"insert_text","path":[0,0],"offset":14,"text":"n"},{"type":"insert_text","path":[0,0],"offset":15,"text":"g"},{"type":"insert_text","path":[0,0],"offset":16,"text":" "},{"type":"set_selection","properties":null,"newProperties":{"anchor":{"path":[0,0],"offset":17},"focus":{"path":[0,0],"offset":17}}}],[{"type":"insert_text","path":[0,0],"offset":17,"text":"{"},{"type":"insert_text","path":[0,0],"offset":18,"text":"{"},{"type":"set_selection","properties":{"anchor":{"path":[0,0],"offset":19}},"newProperties":{"anchor":{"path":[0,0],"offset":17}}},{"type":"remove_text","path":[0,0],"offset":17,"text":"{{"},{"type":"insert_node","path":[0,1],"node":{"type":"template-block","name":"test","children":[{"text":""}]}},{"type":"set_selection","properties":{"anchor":{"path":[0,0],"offset":17},"focus":{"path":[0,0],"offset":17}},"newProperties":{"anchor":{"path":[0,1,0],"offset":0},"focus":{"path":[0,1,0],"offset":0}}},{"type":"insert_node","path":[0,2],"node":{"text":""}},{"type":"set_selection","properties":{"anchor":{"path":[0,1,0],"offset":0},"focus":{"path":[0,1,0],"offset":0}},"newProperties":{"anchor":{"path":[0,2],"offset":0},"focus":{"path":[0,2],"offset":0}}}]],"redos":[]}}

這在他們提到的例子中沒有發生，它使用了類似的邏輯。 任何幫助，將不勝感激！

代碼沙盒：https://codesandbox.io/s/elastic-turing-dv9bm?file=/src/App.tsx

更新：我發現可以通過將插入邏輯（當前在 if 語句中）移動到useEffect掛鈎來避免這個問題，具體取決於包含選擇的target ，類似於 Slate 的提及示例的工作方式。 但是，我仍然很想知道為什么 Slate 會像我以問題陳述的方式編寫它時那樣中斷。

Answer 1

當您使用useMemo時，該問題與渲染有關，您應該使用useRef ：

const editorRef = useRef()
if (!editorRef.current) editorRef.current = withReact(createEditor())
const editor = editorRef.current

https://github.com/ianstormtaylor/slate/issues/4081

Answer 2

我認為您的問題源於<Slate>是上下文提供者這一事實，您實際上應該使用嵌套的<Editable>組件來處理事件 - 在您的情況下為onKeyDown 。 在您提到的具體示例中，我相信您遇到了嵌套Editable組件不會發生的競爭條件。 請參閱文檔中演練下的安裝 Slate 。

https://docs.slatejs.org/walkthroughs/01-installing-slate