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fix(ckeditor5-mermaid): protect against multiple init

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This commit is contained in:
Elian Doran
2026-04-06 12:27:12 +03:00
parent af76740fd9
commit 559815273e
1 changed files with 10 additions and 6 deletions
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16
packages/ckeditor5-mermaid/src/mermaidediting.ts
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@@ -20,7 +20,7 @@ type DowncastConversionData = DowncastAttributeEvent["args"][0];
export default class MermaidEditing extends Plugin {
private _config!: EditorConfig["mermaid"];
private mermaid?: MermaidInstance;
private _mermaidPromise?: Promise<MermaidInstance>;
private _renderGeneration = 0;
/**
@@ -258,12 +258,16 @@ export default class MermaidEditing extends Plugin {
* Renders Mermaid (a parsed `source`) in a given `domElement`.
*/
async _renderMermaid( domElement: HTMLElement, source: string ) {
if ( !this.mermaid && typeof this._config?.lazyLoad === 'function' ) {
this.mermaid = await this._config.lazyLoad();
this.mermaid.initialize( this._config?.config ?? {} );
if ( !this._mermaidPromise && typeof this._config?.lazyLoad === 'function' ) {
this._mermaidPromise = Promise.resolve( this._config.lazyLoad() ).then( instance => {
instance.initialize( this._config?.config ?? {} );
return instance;
} );
}
if ( !this.mermaid ) {
const mermaid = await this._mermaidPromise;
if ( !mermaid ) {
return;
}
@@ -271,7 +275,7 @@ export default class MermaidEditing extends Plugin {
const id = `ck-mermaid-${ uid() }`;
try {
const { svg } = await this.mermaid.render( id, source );
const { svg } = await mermaid.render( id, source );
if ( generation === this._renderGeneration ) {
domElement.innerHTML = svg;