whisper-node-server/dist/tsToArray.js

Local audio transcription on CPU. Node.js bindings for OpenAI's Whisper. Modified from node-whisper

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function parseTranscript(input) {
    if (typeof input === 'string' && input.startsWith('{')) {
        input = JSON.parse(input);
    }
    // If input is already parsed JSON from server
    if (typeof input === 'object') {
        return parseServerResponse(input);
    }
    // Otherwise parse VTT format
    return parseVTTFormat(input);
}
exports.default = parseTranscript;
function parseServerResponse(json) {
    if (!json || !json.segments) {
        throw new Error('Invalid server response format');
    }
    return json.segments.map((segment) => ({
        start: formatTimestamp(segment.start),
        end: formatTimestamp(segment.end),
        speech: segment.text.trim()
    }));
}
function parseVTTFormat(vtt) {
    if (typeof vtt !== 'string') {
        throw new Error('Invalid VTT input: expected string');
    }
    // 1. separate lines by matching the format like "[00:03:04.000 --> 00:03:13.000]   XXXXXX"
    const matches = vtt.match(/\[[0-9:.]+\s-->\s[0-9:.]+\].*/g);
    if (!matches) {
        throw new Error('No valid transcript lines found in VTT format');
    }
    const lines = [...matches];
    // 2. remove the first line if it's empty
    if (lines[0].trim() === '') {
        lines.shift();
    }
    // 3. convert each line into an object
    return lines.map(line => {
        // 3a. split ts from speech
        let [timestamp, speech] = line.split(']  '); // two spaces
        // 3b. remove the open bracket of timestamp
        timestamp = timestamp.substring(1);
        // 3c. split timestamp into begin and end
        const [start, end] = timestamp.split(' --> ');
        // 3d. clean up speech text
        speech = speech.replace(/\n/g, '').trim();
        return { start, end, speech };
    });
}
function formatTimestamp(seconds) {
    const hours = Math.floor(seconds / 3600);
    const minutes = Math.floor((seconds % 3600) / 60);
    const secs = seconds % 60;
    return `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${secs.toFixed(3).padStart(6, '0')}`;
}
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