import { statSync } from "node:fs" ;
import { EdgeTTS } from "node-edge-tts" ;
import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime" ;
type EdgeTTSDeps = {
EdgeTTS: new (config: ConstructorParameters<typeof EdgeTTS>[0 ]) => {
ttsPromise: (text: string, outputPath: string) => Promise<unknown>;
};
};
const defaultEdgeTTSDeps: EdgeTTSDeps = {
EdgeTTS,
};
export function inferEdgeExtension(outputFormat: string): string {
const normalized = normalizeLowercaseStringOrEmpty(outputFormat);
if (normalized.includes("webm" )) {
return ".webm" ;
}
if (normalized.includes("ogg" )) {
return ".ogg" ;
}
if (normalized.includes("opus" )) {
return ".opus" ;
}
if (normalized.includes("wav" ) || normalized.includes("riff" ) || normalized.includes("pcm" )) {
return ".wav" ;
}
return ".mp3" ;
}
export async function edgeTTS(
params: {
text: string;
outputPath: string;
config: {
voice: string;
lang: string;
outputFormat: string;
saveSubtitles: boolean ;
proxy?: string;
rate?: string;
pitch?: string;
volume?: string;
timeoutMs?: number;
};
timeoutMs: number;
},
deps: EdgeTTSDeps = defaultEdgeTTSDeps,
): Promise<void > {
const { text, outputPath, config, timeoutMs } = params;
const tts = new deps.EdgeTTS({
voice: config.voice,
lang: config.lang,
outputFormat: config.outputFormat,
saveSubtitles: config.saveSubtitles,
proxy: config.proxy,
rate: config.rate,
pitch: config.pitch,
volume: config.volume,
timeout: config.timeoutMs ?? timeoutMs,
});
await tts.ttsPromise(text, outputPath);
const { size } = statSync(outputPath);
if (size === 0 ) {
throw new Error("Edge TTS produced empty audio file" );
}
}
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(vorverarbeitet am 2026-06-05)
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