38 lines
1.3 KiB
TypeScript
38 lines
1.3 KiB
TypeScript
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import type { I18nKey, I18nParams } from '@/lib/i18n';
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export class MermaidLoadFailure extends Error {
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key: I18nKey;
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params?: I18nParams;
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constructor(key: I18nKey, params?: I18nParams) {
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super(key);
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this.name = 'MermaidLoadFailure';
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this.key = key;
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this.params = params;
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}
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}
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const mermaidLoadFailure = (key: I18nKey, params?: I18nParams): MermaidLoadFailure => new MermaidLoadFailure(key, params);
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export const isMermaidLoadFailure = (value: unknown): value is MermaidLoadFailure => value instanceof MermaidLoadFailure;
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export const nextMermaidLoadRequestId = (current: number): number => current + 1;
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export const isCurrentMermaidLoadRequest = (current: number, requestId: number): boolean => current === requestId;
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const decodeMermaidDataUrl = (value: string): string => {
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const commaIndex = value.indexOf(',');
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if (commaIndex < 0) {
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throw mermaidLoadFailure('chat.toolOutputDialog.mermaid.dataUrlMalformed');
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}
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const metadata = value.slice(0, commaIndex).toLowerCase();
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const payload = value.slice(commaIndex + 1);
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if (metadata.includes(';base64')) {
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return atob(payload);
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}
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return decodeURIComponent(payload);
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};
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export const getMermaidDataUrlSourcePromise = (value: string): Promise<string> => Promise.resolve().then(() => decodeMermaidDataUrl(value));
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