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22 Commits
0.4.1 ... 0.7.3

Author SHA1 Message Date
a07f069ad0 One embedding at a time
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2026-02-19 22:58:53 -05:00
da15d299e6 parallel embedding cap
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2026-02-19 21:37:58 -05:00
7ef7c3f676 Cap speaker ID transcript length to 2000 tokens
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2026-02-14 09:48:12 -05:00
4143d00de7 Working speaker detection with advanced LLM identifying. Improved LLM json function
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2026-02-14 09:39:17 -05:00
0360f2493d Added hugging face token
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2026-02-12 22:15:57 -05:00
0172887877 audio worker fix
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2026-02-12 20:24:12 -05:00
8f89f5e3cf embedding worker fix
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2026-02-12 20:18:56 -05:00
5bd41f8c6a worker fix?
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2026-02-12 20:17:31 -05:00
e4399e1b7b Updataes?
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2026-02-12 20:14:00 -05:00
ad1ee48763 Use one-off workers to process requests without blocking
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2026-02-12 19:45:17 -05:00
3ed206923f Fix ASR
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2026-02-12 18:32:19 -05:00
22d5427e86 Fix ASR
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2026-02-12 17:49:33 -05:00
43b53164c0 Bump 0.6.3
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2026-02-12 17:24:15 -05:00
575fbac099 Fixed ASR
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2026-02-12 13:31:30 -05:00
46ae0f7913 expose diarization support checking function
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2026-02-12 11:55:29 -05:00
54730a2b9a Speaker diarization
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2026-02-12 11:26:11 -05:00
27506d20af Fix anthropic message history
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2026-02-11 22:45:30 -05:00
8c64129200 Removed log statement
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2026-02-11 21:58:39 -05:00
013aa942c0 Added save directory for embedder
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2026-02-11 21:45:54 -05:00
c8d5660b1a Enable quantized embedder for speed boost
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2026-02-11 20:28:14 -05:00
f2c66b0cb8 Updated default embedder
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2026-02-11 20:23:50 -05:00
cda7db4f45 Added memory system
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2026-02-08 19:52:02 -05:00
15 changed files with 593 additions and 322 deletions

View File

@@ -75,6 +75,7 @@ A TypeScript library that provides a unified interface for working with multiple
#### Instructions #### Instructions
1. Install the package: `npm i @ztimson/ai-utils` 1. Install the package: `npm i @ztimson/ai-utils`
2. For speaker diarization: `pip install pyannote.audio`
</details> </details>
@@ -90,8 +91,9 @@ A TypeScript library that provides a unified interface for working with multiple
#### Instructions #### Instructions
1. Install the dependencies: `npm i` 1. Install the dependencies: `npm i`
2. Build library: `npm build` 2. For speaker diarization: `pip install pyannote.audio`
3. Run unit tests: `npm test` 3. Build library: `npm build`
4. Run unit tests: `npm test`
</details> </details>

337
package-lock.json generated
View File

@@ -1,12 +1,12 @@
{ {
"name": "@ztimson/ai-utils", "name": "@ztimson/ai-utils",
"version": "0.4.0", "version": "0.6.4",
"lockfileVersion": 3, "lockfileVersion": 3,
"requires": true, "requires": true,
"packages": { "packages": {
"": { "": {
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"version": "0.4.0", "version": "0.6.4",
"license": "MIT", "license": "MIT",
"dependencies": { "dependencies": {
"@anthropic-ai/sdk": "^0.67.0", "@anthropic-ai/sdk": "^0.67.0",
@@ -16,7 +16,8 @@
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"wavefile": "^11.0.0"
}, },
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@@ -106,9 +107,9 @@
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@@ -123,9 +124,9 @@
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@@ -140,9 +141,9 @@
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@@ -157,9 +158,9 @@
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@@ -174,9 +175,9 @@
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@@ -191,9 +192,9 @@
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@@ -208,9 +209,9 @@
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@@ -225,9 +226,9 @@
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@@ -242,9 +243,9 @@
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@@ -259,9 +260,9 @@
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@@ -276,9 +277,9 @@
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@@ -293,9 +294,9 @@
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@@ -310,9 +311,9 @@
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@@ -327,9 +328,9 @@
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@@ -344,9 +345,9 @@
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@@ -361,9 +362,9 @@
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@@ -378,9 +379,9 @@
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@@ -395,9 +396,9 @@
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@@ -412,9 +413,9 @@
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"integrity": "sha512-NHRpPEUPzAvFOAFs9+9pC6+HCw/iWsYsKCMPXH5Kw7BpMxqd8g/A07/1o7Gx2TWtCnzevVRyKMRFqyiHyAlqcA==", "integrity": "sha512-26dQFi76dB8IiN/WKGQOV+yKKTTlRCxQjoi2WLt0kMcH8pvxVyvfdBDkld5GTl7W1qvBpwVOtFcsqktj3fBRpA==",
"license": "Apache-2.0", "license": "Apache-2.0",
"bin": { "bin": {
"openai": "bin/cli" "openai": "bin/cli"
@@ -3994,9 +3995,9 @@
"license": "MIT" "license": "MIT"
}, },
"node_modules/semver": { "node_modules/semver": {
"version": "7.7.3", "version": "7.7.4",
"resolved": "https://registry.npmjs.org/semver/-/semver-7.7.3.tgz", "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
"integrity": "sha512-SdsKMrI9TdgjdweUSR9MweHA4EJ8YxHn8DFaDisvhVlUOe4BF1tLD7GAj0lIqWVl+dPb/rExr0Btby5loQm20Q==", "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
"license": "ISC", "license": "ISC",
"bin": { "bin": {
"semver": "bin/semver.js" "semver": "bin/semver.js"
@@ -4403,9 +4404,9 @@
"license": "MIT" "license": "MIT"
}, },
"node_modules/undici": { "node_modules/undici": {
"version": "7.19.2", "version": "7.21.0",
"resolved": "https://registry.npmjs.org/undici/-/undici-7.19.2.tgz", "resolved": "https://registry.npmjs.org/undici/-/undici-7.21.0.tgz",
"integrity": "sha512-4VQSpGEGsWzk0VYxyB/wVX/Q7qf9t5znLRgs0dzszr9w9Fej/8RVNQ+S20vdXSAyra/bJ7ZQfGv6ZMj7UEbzSg==", "integrity": "sha512-Hn2tCQpoDt1wv23a68Ctc8Cr/BHpUSfaPYrkajTXOS9IKpxVRx/X5m1K2YkbK2ipgZgxXSgsUinl3x+2YdSSfg==",
"license": "MIT", "license": "MIT",
"engines": { "engines": {
"node": ">=20.18.1" "node": ">=20.18.1"
@@ -4667,6 +4668,18 @@
"integrity": "sha512-zksaLKM2fVlnB5jQQDqKXXwYHLQUVH9es+5TOOHwGOVJOCeRBCiPjwSg+3tN2AdTCzjgli4jijCH290kXb/zWQ==", "integrity": "sha512-zksaLKM2fVlnB5jQQDqKXXwYHLQUVH9es+5TOOHwGOVJOCeRBCiPjwSg+3tN2AdTCzjgli4jijCH290kXb/zWQ==",
"license": "Apache-2.0" "license": "Apache-2.0"
}, },
"node_modules/wavefile": {
"version": "11.0.0",
"resolved": "https://registry.npmjs.org/wavefile/-/wavefile-11.0.0.tgz",
"integrity": "sha512-/OBiAALgWU24IG7sC84cDO/KfFuvajWc5Uec0oV2zrpOOZZDgGdOwHwgEzOrwh8jkubBk7PtZfQBIcI1OaE5Ng==",
"license": "MIT",
"bin": {
"wavefile": "bin/wavefile.js"
},
"engines": {
"node": ">=8"
}
},
"node_modules/webidl-conversions": { "node_modules/webidl-conversions": {
"version": "3.0.1", "version": "3.0.1",
"resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz", "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",

View File

@@ -1,6 +1,6 @@
{ {
"name": "@ztimson/ai-utils", "name": "@ztimson/ai-utils",
"version": "0.4.1", "version": "0.7.3",
"description": "AI Utility library", "description": "AI Utility library",
"author": "Zak Timson", "author": "Zak Timson",
"license": "MIT", "license": "MIT",
@@ -32,7 +32,8 @@
"@ztimson/utils": "^0.27.9", "@ztimson/utils": "^0.27.9",
"cheerio": "^1.2.0", "cheerio": "^1.2.0",
"openai": "^6.6.0", "openai": "^6.6.0",
"tesseract.js": "^6.0.1" "tesseract.js": "^6.0.1",
"wavefile": "^11.0.0"
}, },
"devDependencies": { "devDependencies": {
"@types/node": "^24.8.1", "@types/node": "^24.8.1",

View File

@@ -1,29 +1,27 @@
import * as os from 'node:os'; import * as os from 'node:os';
import {LLM, AnthropicConfig, OllamaConfig, OpenAiConfig, LLMRequest} from './llm'; import LLM, {AnthropicConfig, OllamaConfig, OpenAiConfig, LLMRequest} from './llm';
import { Audio } from './audio.ts'; import { Audio } from './audio.ts';
import {Vision} from './vision.ts'; import {Vision} from './vision.ts';
export type AbortablePromise<T> = Promise<T> & {abort: () => any}; export type AbortablePromise<T> = Promise<T> & {
abort: () => any
};
export type AiOptions = { export type AiOptions = {
/** Token to pull models from hugging face */
hfToken?: string;
/** Path to models */ /** Path to models */
path?: string; path?: string;
/** ASR model: whisper-tiny, whisper-base */
asr?: string;
/** Embedding model: all-MiniLM-L6-v2, bge-small-en-v1.5, bge-large-en-v1.5 */
embedder?: string;
/** Large language models, first is default */ /** Large language models, first is default */
llm?: Omit<LLMRequest, 'model'> & { llm?: Omit<LLMRequest, 'model'> & {
models: {[model: string]: AnthropicConfig | OllamaConfig | OpenAiConfig}; models: {[model: string]: AnthropicConfig | OllamaConfig | OpenAiConfig};
} }
/** Tesseract OCR configuration */ /** OCR model: eng, eng_best, eng_fast */
tesseract?: { ocr?: string;
/** Model: eng, eng_best, eng_fast */
model?: string;
}
/** Whisper ASR configuration */
whisper?: {
/** Whisper binary location */
binary: string;
/** Model: `ggml-base.en.bin` */
model: string;
}
} }
export class Ai { export class Ai {

View File

@@ -13,25 +13,25 @@ export class Anthropic extends LLMProvider {
} }
private toStandard(history: any[]): LLMMessage[] { private toStandard(history: any[]): LLMMessage[] {
for(let i = 0; i < history.length; i++) { const timestamp = Date.now();
const orgI = i; const messages: LLMMessage[] = [];
if(typeof history[orgI].content != 'string') { for(let h of history) {
if(history[orgI].role == 'assistant') { if(typeof h.content == 'string') {
history[orgI].content.filter((c: any) => c.type =='tool_use').forEach((c: any) => { messages.push(<any>{timestamp, ...h});
i++; } else {
history.splice(i, 0, {role: 'tool', id: c.id, name: c.name, args: c.input, timestamp: Date.now()}); const textContent = h.content?.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n');
}); if(textContent) messages.push({timestamp, role: h.role, content: textContent});
} else if(history[orgI].role == 'user') { h.content.forEach((c: any) => {
history[orgI].content.filter((c: any) => c.type =='tool_result').forEach((c: any) => { if(c.type == 'tool_use') {
const h = history.find((h: any) => h.id == c.tool_use_id); messages.push({timestamp, role: 'tool', id: c.id, name: c.name, args: c.input, content: undefined});
h[c.is_error ? 'error' : 'content'] = c.content; } else if(c.type == 'tool_result') {
const m: any = messages.findLast(m => (<any>m).id == c.tool_use_id);
if(m) m[c.is_error ? 'error' : 'content'] = c.content;
}
}); });
} }
history[orgI].content = history[orgI].content.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n');
} }
if(!history[orgI].timestamp) history[orgI].timestamp = Date.now(); return messages;
}
return history.filter(h => !!h.content);
} }
private fromStandard(history: LLMMessage[]): any[] { private fromStandard(history: LLMMessage[]): any[] {
@@ -48,13 +48,10 @@ export class Anthropic extends LLMProvider {
return history.map(({timestamp, ...h}) => h); return history.map(({timestamp, ...h}) => h);
} }
ask(message: string, options: LLMRequest = {}): AbortablePromise<LLMMessage[]> { ask(message: string, options: LLMRequest = {}): AbortablePromise<string> {
const controller = new AbortController(); const controller = new AbortController();
const response = new Promise<any>(async (res, rej) => { return Object.assign(new Promise<any>(async (res) => {
let history = [...options.history || [], {role: 'user', content: message, timestamp: Date.now()}]; let history = this.fromStandard([...options.history || [], {role: 'user', content: message, timestamp: Date.now()}]);
if(options.compress) history = await this.ai.language.compressHistory(<any>history, options.compress.max, options.compress.min, options);
history = this.fromStandard(<any>history);
const tools = options.tools || this.ai.options.llm?.tools || []; const tools = options.tools || this.ai.options.llm?.tools || [];
const requestParams: any = { const requestParams: any = {
model: options.model || this.model, model: options.model || this.model,
@@ -76,7 +73,6 @@ export class Anthropic extends LLMProvider {
}; };
let resp: any, isFirstMessage = true; let resp: any, isFirstMessage = true;
const assistantMessages: string[] = [];
do { do {
resp = await this.client.messages.create(requestParams).catch(err => { resp = await this.client.messages.create(requestParams).catch(err => {
err.message += `\n\nMessages:\n${JSON.stringify(history, null, 2)}`; err.message += `\n\nMessages:\n${JSON.stringify(history, null, 2)}`;
@@ -122,7 +118,7 @@ export class Anthropic extends LLMProvider {
if(options.stream) options.stream({tool: toolCall.name}); if(options.stream) options.stream({tool: toolCall.name});
if(!tool) return {tool_use_id: toolCall.id, is_error: true, content: 'Tool not found'}; if(!tool) return {tool_use_id: toolCall.id, is_error: true, content: 'Tool not found'};
try { try {
const result = await tool.fn(toolCall.input, this.ai); const result = await tool.fn(toolCall.input, options?.stream, this.ai);
return {type: 'tool_result', tool_use_id: toolCall.id, content: JSONSanitize(result)}; return {type: 'tool_result', tool_use_id: toolCall.id, content: JSONSanitize(result)};
} catch (err: any) { } catch (err: any) {
return {type: 'tool_result', tool_use_id: toolCall.id, is_error: true, content: err?.message || err?.toString() || 'Unknown'}; return {type: 'tool_result', tool_use_id: toolCall.id, is_error: true, content: err?.message || err?.toString() || 'Unknown'};
@@ -132,11 +128,12 @@ export class Anthropic extends LLMProvider {
requestParams.messages = history; requestParams.messages = history;
} }
} while (!controller.signal.aborted && resp.content.some((c: any) => c.type === 'tool_use')); } while (!controller.signal.aborted && resp.content.some((c: any) => c.type === 'tool_use'));
history.push({role: 'assistant', content: resp.content.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n')});
history = this.toStandard(history);
if(options.stream) options.stream({done: true}); if(options.stream) options.stream({done: true});
res(this.toStandard([...history, {role: 'assistant', content: resp.content.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n')}])); if(options.history) options.history.splice(0, options.history.length, ...history);
}); res(history.at(-1)?.content);
}), {abort: () => controller.abort()});
return Object.assign(response, {abort: () => controller.abort()});
} }
} }

134
src/asr.ts Normal file
View File

@@ -0,0 +1,134 @@
import { pipeline } from '@xenova/transformers';
import { parentPort } from 'worker_threads';
import { spawn } from 'node:child_process';
import { execSync } from 'node:child_process';
import { mkdtempSync, rmSync, readFileSync } from 'node:fs';
import { join } from 'node:path';
import { tmpdir } from 'node:os';
import wavefile from 'wavefile';
let whisperPipeline: any;
export async function canDiarization(): Promise<boolean> {
return new Promise((resolve) => {
const proc = spawn('python', ['-c', 'import pyannote.audio']);
proc.on('close', (code: number) => resolve(code === 0));
proc.on('error', () => resolve(false));
});
}
async function runDiarization(audioPath: string, dir: string, token: string): Promise<any[]> {
const script = `
import sys
import json
import os
from pyannote.audio import Pipeline
os.environ['TORCH_HOME'] = r"${dir}"
pipeline = Pipeline.from_pretrained("pyannote/speaker-diarization-3.1", token="${token}")
output = pipeline(sys.argv[1])
segments = []
for turn, speaker in output.speaker_diarization:
segments.append({"start": turn.start, "end": turn.end, "speaker": speaker})
print(json.dumps(segments))
`;
return new Promise((resolve, reject) => {
let output = '';
const proc = spawn('python', ['-c', script, audioPath]);
proc.stdout.on('data', (data: Buffer) => output += data.toString());
proc.stderr.on('data', (data: Buffer) => console.error(data.toString()));
proc.on('close', (code: number) => {
if(code === 0) {
try {
resolve(JSON.parse(output));
} catch (err) {
reject(new Error('Failed to parse diarization output'));
}
} else {
reject(new Error(`Python process exited with code ${code}`));
}
});
proc.on('error', reject);
});
}
function combineSpeakerTranscript(chunks: any[], speakers: any[]): string {
const speakerMap = new Map();
let speakerCount = 0;
speakers.forEach((seg: any) => {
if(!speakerMap.has(seg.speaker)) speakerMap.set(seg.speaker, ++speakerCount);
});
const lines: string[] = [];
let currentSpeaker = -1;
let currentText = '';
chunks.forEach((chunk: any) => {
const time = chunk.timestamp[0];
const speaker = speakers.find((s: any) => time >= s.start && time <= s.end);
const speakerNum = speaker ? speakerMap.get(speaker.speaker) : 1;
if (speakerNum !== currentSpeaker) {
if(currentText) lines.push(`[Speaker ${currentSpeaker}]: ${currentText.trim()}`);
currentSpeaker = speakerNum;
currentText = chunk.text;
} else {
currentText += chunk.text;
}
});
if(currentText) lines.push(`[Speaker ${currentSpeaker}]: ${currentText.trim()}`);
return lines.join('\n');
}
function prepareAudioBuffer(file: string): [string, Float32Array] {
let wav: any, tmp;
try {
wav = new wavefile.WaveFile(readFileSync(file));
} catch(err) {
tmp = join(mkdtempSync(join(tmpdir(), 'audio-')), 'converted.wav');
execSync(`ffmpeg -i "${file}" -ar 16000 -ac 1 -f wav "${tmp}"`, { stdio: 'ignore' });
wav = new wavefile.WaveFile(readFileSync(tmp));
} finally {
wav.toBitDepth('32f');
wav.toSampleRate(16000);
const samples = wav.getSamples();
if(Array.isArray(samples)) {
const left = samples[0];
const right = samples[1];
const buffer = new Float32Array(left.length);
for (let i = 0; i < left.length; i++) buffer[i] = (left[i] + right[i]) / 2;
return [tmp || file, buffer];
}
return [tmp || file, samples];
}
}
parentPort?.on('message', async ({ file, speaker, model, modelDir, token }) => {
try {
if(!whisperPipeline) whisperPipeline = await pipeline('automatic-speech-recognition', `Xenova/${model}`, {cache_dir: modelDir, quantized: true});
// Prepare audio file
const [f, buffer] = prepareAudioBuffer(file);
// Fetch transcript and speakers
const hasDiarization = speaker && await canDiarization();
const [transcript, speakers] = await Promise.all([
whisperPipeline(buffer, {return_timestamps: speaker ? 'word' : false}),
(!speaker || !token || !hasDiarization) ? Promise.resolve(): runDiarization(f, modelDir, token),
]);
if(file != f) rmSync(f, { recursive: true, force: true });
// Return any results / errors if no more processing required
const text = transcript.text?.trim() || null;
if(!speaker) return parentPort?.postMessage({ text });
if(!token) return parentPort?.postMessage({ text, error: 'HuggingFace token required' });
if(!hasDiarization) return parentPort?.postMessage({ text, error: 'Speaker diarization unavailable' });
// Combine transcript and speakers
const combined = combineSpeakerTranscript(transcript.chunks || [], speakers || []);
parentPort?.postMessage({ text: combined });
} catch (err: any) {
parentPort?.postMessage({ error: err.stack || err.message });
}
});

View File

@@ -1,50 +1,60 @@
import {spawn} from 'node:child_process'; import {fileURLToPath} from 'url';
import fs from 'node:fs/promises'; import {Worker} from 'worker_threads';
import Path from 'node:path';
import {AbortablePromise, Ai} from './ai.ts'; import {AbortablePromise, Ai} from './ai.ts';
import {canDiarization} from './asr.ts';
import {dirname, join} from 'path';
export class Audio { export class Audio {
private downloads: {[key: string]: Promise<string>} = {}; constructor(private ai: Ai) {}
private whisperModel!: string;
constructor(private ai: Ai) { asr(file: string, options: { model?: string; speaker?: boolean | 'id' } = {}): AbortablePromise<string | null> {
if(ai.options.whisper?.binary) { const { model = this.ai.options.asr || 'whisper-base', speaker = false } = options;
this.whisperModel = ai.options.whisper?.model.endsWith('.bin') ? ai.options.whisper?.model : ai.options.whisper?.model + '.bin'; let aborted = false;
this.downloadAsrModel(); const abort = () => { aborted = true; };
let p = new Promise<string | null>((resolve, reject) => {
const worker = new Worker(join(dirname(fileURLToPath(import.meta.url)), 'asr.js'));
const handleMessage = ({ text, warning, error }: any) => {
worker.terminate();
if(aborted) return;
if(error) reject(new Error(error));
else {
if(warning) console.warn(warning);
resolve(text);
} }
};
const handleError = (err: Error) => {
worker.terminate();
if(!aborted) reject(err);
};
worker.on('message', handleMessage);
worker.on('error', handleError);
worker.on('exit', (code) => {
if(code !== 0 && !aborted) reject(new Error(`Worker exited with code ${code}`));
});
worker.postMessage({file, model, speaker, modelDir: this.ai.options.path, token: this.ai.options.hfToken});
});
// Name speakers using AI
if(options.speaker == 'id') {
if(!this.ai.language.defaultModel) throw new Error('Configure an LLM for advanced ASR speaker detection');
p = p.then(async transcript => {
if(!transcript) return transcript;
let chunks = this.ai.language.chunk(transcript, 500, 0);
if(chunks.length > 4) chunks = [...chunks.slice(0, 3), <string>chunks.at(-1)];
const names = await this.ai.language.json(chunks.join('\n'), '{1: "Detected Name"}', {
system: 'Use this following transcript to identify speakers. Only identify speakers you are sure about',
temperature: 0.1,
});
Object.entries(names).forEach(([speaker, name]) => {
transcript = (<string>transcript).replaceAll(`[Speaker ${speaker}]`, `[${name}]`);
});
return transcript;
})
} }
asr(path: string, model: string = this.whisperModel): AbortablePromise<string | null> { return Object.assign(p, { abort });
if(!this.ai.options.whisper?.binary) throw new Error('Whisper not configured');
let abort: any = () => {};
const p = new Promise<string | null>(async (resolve, reject) => {
const m = await this.downloadAsrModel(model);
let output = '';
const proc = spawn(<string>this.ai.options.whisper?.binary, ['-nt', '-np', '-m', m, '-f', path], {stdio: ['ignore', 'pipe', 'ignore']});
abort = () => proc.kill('SIGTERM');
proc.on('error', (err: Error) => reject(err));
proc.stdout.on('data', (data: Buffer) => output += data.toString());
proc.on('close', (code: number) => {
if(code === 0) resolve(output.trim() || null);
else reject(new Error(`Exit code ${code}`));
});
});
return Object.assign(p, {abort});
} }
async downloadAsrModel(model: string = this.whisperModel): Promise<string> { canDiarization = canDiarization;
if(!this.ai.options.whisper?.binary) throw new Error('Whisper not configured');
if(!model.endsWith('.bin')) model += '.bin';
const p = Path.join(<string>this.ai.options.path, model);
if(await fs.stat(p).then(() => true).catch(() => false)) return p;
if(!!this.downloads[model]) return this.downloads[model];
this.downloads[model] = fetch(`https://huggingface.co/ggerganov/whisper.cpp/resolve/main/${model}`)
.then(resp => resp.arrayBuffer())
.then(arr => Buffer.from(arr)).then(async buffer => {
await fs.writeFile(p, buffer);
delete this.downloads[model];
return p;
});
return this.downloads[model];
}
} }

View File

@@ -1,11 +1,11 @@
import { pipeline } from '@xenova/transformers'; import { pipeline } from '@xenova/transformers';
import { parentPort } from 'worker_threads'; import { parentPort } from 'worker_threads';
let model: any; let embedder: any;
parentPort?.on('message', async ({ id, text }) => { parentPort?.on('message', async ({text, model, modelDir }) => {
if(!model) model = await pipeline('feature-extraction', 'Xenova/all-MiniLM-L6-v2'); if(!embedder) embedder = await pipeline('feature-extraction', 'Xenova/' + model, {quantized: true, cache_dir: modelDir});
const output = await model(text, { pooling: 'mean', normalize: true }); const output = await embedder(text, { pooling: 'mean', normalize: true });
const embedding = Array.from(output.data); const embedding = Array.from(output.data);
parentPort?.postMessage({ id, embedding }); parentPort?.postMessage({embedding});
}); });

View File

@@ -1,5 +1,6 @@
export * from './ai'; export * from './ai';
export * from './antrhopic'; export * from './antrhopic';
export * from './asr';
export * from './audio'; export * from './audio';
export * from './embedder' export * from './embedder'
export * from './llm'; export * from './llm';

View File

@@ -31,11 +31,23 @@ export type LLMMessage = {
/** Tool result */ /** Tool result */
content: undefined | string; content: undefined | string;
/** Tool error */ /** Tool error */
error: undefined | string; error?: undefined | string;
/** Timestamp */ /** Timestamp */
timestamp?: number; timestamp?: number;
} }
/** Background information the AI will be fed */
export type LLMMemory = {
/** What entity is this fact about */
owner: string;
/** The information that will be remembered */
fact: string;
/** Owner and fact embedding vector */
embeddings: [number[], number[]];
/** Creation time */
timestamp: Date;
}
export type LLMRequest = { export type LLMRequest = {
/** System prompt */ /** System prompt */
system?: string; system?: string;
@@ -57,26 +69,16 @@ export type LLMRequest = {
max: number; max: number;
/** Compress chat until context size smaller than */ /** Compress chat until context size smaller than */
min: number min: number
} },
/** Background information the AI will be fed */
memory?: LLMMemory[],
} }
export class LLM { class LLM {
private embedWorker: Worker | null = null; defaultModel!: string;
private embedQueue = new Map<number, { resolve: (value: number[]) => void; reject: (error: any) => void }>(); models: {[model: string]: LLMProvider} = {};
private embedId = 0;
private models: {[model: string]: LLMProvider} = {};
private defaultModel!: string;
constructor(public readonly ai: Ai) { constructor(public readonly ai: Ai) {
this.embedWorker = new Worker(join(dirname(fileURLToPath(import.meta.url)), 'embedder.js'));
this.embedWorker.on('message', ({ id, embedding }) => {
const pending = this.embedQueue.get(id);
if (pending) {
pending.resolve(embedding);
this.embedQueue.delete(id);
}
});
if(!ai.options.llm?.models) return; if(!ai.options.llm?.models) return;
Object.entries(ai.options.llm.models).forEach(([model, config]) => { Object.entries(ai.options.llm.models).forEach(([model, config]) => {
if(!this.defaultModel) this.defaultModel = model; if(!this.defaultModel) this.defaultModel = model;
@@ -90,37 +92,120 @@ export class LLM {
* Chat with LLM * Chat with LLM
* @param {string} message Question * @param {string} message Question
* @param {LLMRequest} options Configuration options and chat history * @param {LLMRequest} options Configuration options and chat history
* @returns {{abort: () => void, response: Promise<LLMMessage[]>}} Function to abort response and chat history * @returns {{abort: () => void, response: Promise<string>}} Function to abort response and chat history
*/ */
ask(message: string, options: LLMRequest = {}): AbortablePromise<LLMMessage[]> { ask(message: string, options: LLMRequest = {}): AbortablePromise<string> {
const m = options.model || this.defaultModel; const m = options.model || this.defaultModel;
if(!this.models[m]) throw new Error(`Model does not exist: ${m}`); if(!this.models[m]) throw new Error(`Model does not exist: ${m}`);
return this.models[m].ask(message, options); let abort = () => {};
return Object.assign(new Promise<string>(async res => {
if(!options.history) options.history = [];
// If memories were passed, find any relivant ones and add a tool for ADHOC lookups
if(options.memory) {
options.system = (options.system || '') + '\nYou have passive persistent memory never make any mention of your memory capabilities and what you can/cannot remember\n';
const search = async (query?: string | null, subject?: string | null, limit = 50) => {
const [o, q] = await Promise.all([
subject ? this.embedding(subject) : Promise.resolve(null),
query ? this.embedding(query) : Promise.resolve(null),
]);
return (options.memory || [])
.map(m => ({...m, score: o ? this.cosineSimilarity(m.embeddings[0], o[0].embedding) : 1}))
.filter((m: any) => m.score >= 0.8)
.map((m: any) => ({...m, score: q ? this.cosineSimilarity(m.embeddings[1], q[0].embedding) : m.score}))
.filter((m: any) => m.score >= 0.2)
.toSorted((a: any, b: any) => a.score - b.score)
.slice(0, limit);
}
const relevant = await search(message);
if(relevant.length) options.history.push({role: 'assistant', content: 'Things I remembered:\n' + relevant.map(m => `${m.owner}: ${m.fact}`).join('\n')});
options.tools = [...options.tools || [], {
name: 'read_memory',
description: 'Check your long-term memory for more information',
args: {
subject: {type: 'string', description: 'Find information by a subject topic, can be used with or without query argument'},
query: {type: 'string', description: 'Search memory based on a query, can be used with or without subject argument'},
limit: {type: 'number', description: 'Result limit, default 5'},
},
fn: (args) => {
if(!args.subject && !args.query) throw new Error('Either a subject or query argument is required');
return search(args.query, args.subject, args.limit || 5);
}
}];
}
// Ask
const resp = await this.models[m].ask(message, options);
// Remove any memory calls
if(options.memory) {
const i = options.history?.findIndex((h: any) => h.role == 'assistant' && h.content.startsWith('Things I remembered:'));
if(i != null && i >= 0) options.history?.splice(i, 1);
}
// Handle compression and memory extraction
if(options.compress || options.memory) {
let compressed = null;
if(options.compress) {
compressed = await this.ai.language.compressHistory(options.history, options.compress.max, options.compress.min, options);
options.history.splice(0, options.history.length, ...compressed.history);
} else {
const i = options.history?.findLastIndex(m => m.role == 'user') ?? -1;
compressed = await this.ai.language.compressHistory(i != -1 ? options.history.slice(i) : options.history, 0, 0, options);
}
if(options.memory) {
const updated = options.memory
.filter(m => !compressed.memory.some(m2 => this.cosineSimilarity(m.embeddings[1], m2.embeddings[1]) > 0.8))
.concat(compressed.memory);
options.memory.splice(0, options.memory.length, ...updated);
}
}
return res(resp);
}), {abort});
} }
/** /**
* Compress chat history to reduce context size * Compress chat history to reduce context size
* @param {LLMMessage[]} history Chatlog that will be compressed * @param {LLMMessage[]} history Chatlog that will be compressed
* @param max Trigger compression once context is larger than max * @param max Trigger compression once context is larger than max
* @param min Summarize until context size is less than min * @param min Leave messages less than the token minimum, summarize the rest
* @param {LLMRequest} options LLM options * @param {LLMRequest} options LLM options
* @returns {Promise<LLMMessage[]>} New chat history will summary at index 0 * @returns {Promise<LLMMessage[]>} New chat history will summary at index 0
*/ */
async compressHistory(history: LLMMessage[], max: number, min: number, options?: LLMRequest): Promise<LLMMessage[]> { async compressHistory(history: LLMMessage[], max: number, min: number, options?: LLMRequest): Promise<{history: LLMMessage[], memory: LLMMemory[]}> {
if(this.estimateTokens(history) < max) return history; if(this.estimateTokens(history) < max) return {history, memory: []};
let keep = 0, tokens = 0; let keep = 0, tokens = 0;
for(let m of history.toReversed()) { for(let m of history.toReversed()) {
tokens += this.estimateTokens(m.content); tokens += this.estimateTokens(m.content);
if(tokens < min) keep++; if(tokens < min) keep++;
else break; else break;
} }
if(history.length <= keep) return history; if(history.length <= keep) return {history, memory: []};
const recent = keep == 0 ? [] : history.slice(-keep), const system = history[0].role == 'system' ? history[0] : null,
recent = keep == 0 ? [] : history.slice(-keep),
process = (keep == 0 ? history : history.slice(0, -keep)).filter(h => h.role === 'assistant' || h.role === 'user'); process = (keep == 0 ? history : history.slice(0, -keep)).filter(h => h.role === 'assistant' || h.role === 'user');
const summary = await this.summarize(process.map(m => `${m.role}: ${m.content}`).join('\n\n'), 250, options);
return [{role: 'assistant', content: `Conversation Summary: ${summary}`, timestamp: Date.now()}, ...recent]; const summary: any = await this.json(process.map(m => `${m.role}: ${m.content}`).join('\n\n'), '{summary: string, facts: [[subject, fact]]}', {
system: 'Create the smallest summary possible, no more than 500 tokens. Create a list of NEW facts (split by subject [pro]noun and fact) about what you learned from this conversation that you didn\'t already know or get from a tool call or system prompt. Focus only on new information about people, topics, or facts. Avoid generating facts about the AI.',
model: options?.model,
temperature: options?.temperature || 0.3
});
const timestamp = new Date();
const memory = await Promise.all((summary?.facts || [])?.map(async ([owner, fact]: [string, string]) => {
const e = await Promise.all([this.embedding(owner), this.embedding(`${owner}: ${fact}`)]);
return {owner, fact, embeddings: [e[0][0].embedding, e[1][0].embedding], timestamp};
}));
const h = [{role: 'assistant', content: `Conversation Summary: ${summary?.summary}`, timestamp: Date.now()}, ...recent];
if(system) h.splice(0, 0, system);
return {history: <any>h, memory};
} }
/**
* Compare the difference between embeddings (calculates the angle between two vectors)
* @param {number[]} v1 First embedding / vector comparison
* @param {number[]} v2 Second embedding / vector for comparison
* @returns {number} Similarity values 0-1: 0 = unique, 1 = identical
*/
cosineSimilarity(v1: number[], v2: number[]): number { cosineSimilarity(v1: number[], v2: number[]): number {
if (v1.length !== v2.length) throw new Error('Vectors must be same length'); if (v1.length !== v2.length) throw new Error('Vectors must be same length');
let dotProduct = 0, normA = 0, normB = 0; let dotProduct = 0, normA = 0, normB = 0;
@@ -133,6 +218,13 @@ export class LLM {
return denominator === 0 ? 0 : dotProduct / denominator; return denominator === 0 ? 0 : dotProduct / denominator;
} }
/**
* Chunk text into parts for AI digestion
* @param {object | string} target Item that will be chunked (objects get converted)
* @param {number} maxTokens Chunking size. More = better context, less = more specific (Search by paragraphs or lines)
* @param {number} overlapTokens Includes previous X tokens to provide continuity to AI (In addition to max tokens)
* @returns {string[]} Chunked strings
*/
chunk(target: object | string, maxTokens = 500, overlapTokens = 50): string[] { chunk(target: object | string, maxTokens = 500, overlapTokens = 50): string[] {
const objString = (obj: any, path = ''): string[] => { const objString = (obj: any, path = ''): string[] => {
if(!obj) return []; if(!obj) return [];
@@ -142,7 +234,6 @@ export class LLM {
return `${p}: ${Array.isArray(value) ? value.join(', ') : value}`; return `${p}: ${Array.isArray(value) ? value.join(', ') : value}`;
}); });
}; };
const lines = typeof target === 'object' ? objString(target) : target.split('\n'); const lines = typeof target === 'object' ? objString(target) : target.split('\n');
const tokens = lines.flatMap(l => [...l.split(/\s+/).filter(Boolean), '\n']); const tokens = lines.flatMap(l => [...l.split(/\s+/).filter(Boolean), '\n']);
const chunks: string[] = []; const chunks: string[] = [];
@@ -161,22 +252,40 @@ export class LLM {
return chunks; return chunks;
} }
embedding(target: object | string, maxTokens = 500, overlapTokens = 50) { /**
* Create a vector representation of a string
* @param {object | string} target Item that will be embedded (objects get converted)
* @param {maxTokens?: number, overlapTokens?: number} opts Options for embedding such as chunk sizes
* @returns {Promise<Awaited<{index: number, embedding: number[], text: string, tokens: number}>[]>} Chunked embeddings
*/
async embedding(target: object | string, opts: {maxTokens?: number, overlapTokens?: number} = {}) {
let {maxTokens = 500, overlapTokens = 50} = opts;
const embed = (text: string): Promise<number[]> => { const embed = (text: string): Promise<number[]> => {
return new Promise((resolve, reject) => { return new Promise((resolve, reject) => {
const id = this.embedId++; const worker = new Worker(join(dirname(fileURLToPath(import.meta.url)), 'embedder.js'));
this.embedQueue.set(id, { resolve, reject }); const handleMessage = ({ embedding }: any) => {
this.embedWorker?.postMessage({ id, text }); worker.terminate();
resolve(embedding);
};
const handleError = (err: Error) => {
worker.terminate();
reject(err);
};
worker.on('message', handleMessage);
worker.on('error', handleError);
worker.on('exit', (code) => {
if(code !== 0) reject(new Error(`Worker exited with code ${code}`));
});
worker.postMessage({text, model: this.ai.options?.embedder || 'bge-small-en-v1.5', modelDir: this.ai.options.path});
}); });
}; };
const chunks = this.chunk(target, maxTokens, overlapTokens), results: any[] = [];
const chunks = this.chunk(target, maxTokens, overlapTokens); for(let i = 0; i < chunks.length; i++) {
return Promise.all(chunks.map(async (text, index) => ({ const text= chunks[i];
index, const embedding = await embed(text);
embedding: await embed(text), results.push({index: i, embedding, text, tokens: this.estimateTokens(text)});
text, }
tokens: this.estimateTokens(text), return results;
})));
} }
/** /**
@@ -191,7 +300,7 @@ export class LLM {
/** /**
* Compare the difference between two strings using tensor math * Compare the difference between two strings using tensor math
* @param target Text that will checked * @param target Text that will be checked
* @param {string} searchTerms Multiple search terms to check against target * @param {string} searchTerms Multiple search terms to check against target
* @returns {{avg: number, max: number, similarities: number[]}} Similarity values 0-1: 0 = unique, 1 = identical * @returns {{avg: number, max: number, similarities: number[]}} Similarity values 0-1: 0 = unique, 1 = identical
*/ */
@@ -208,17 +317,20 @@ export class LLM {
/** /**
* Ask a question with JSON response * Ask a question with JSON response
* @param {string} message Question * @param {string} text Text to process
* @param {string} schema JSON schema the AI should match
* @param {LLMRequest} options Configuration options and chat history * @param {LLMRequest} options Configuration options and chat history
* @returns {Promise<{} | {} | RegExpExecArray | null>} * @returns {Promise<{} | {} | RegExpExecArray | null>}
*/ */
async json(message: string, options?: LLMRequest) { async json(text: string, schema: string, options?: LLMRequest): Promise<any> {
let resp = await this.ask(message, { let resp = await this.ask(text, {...options, system: (options?.system ? `${options.system}\n` : '') + `Only respond using a JSON code block matching this schema:
system: 'Respond using a JSON blob', \`\`\`json
...options ${schema}
}); \`\`\``});
if(!resp?.[0]?.content) return {}; if(!resp) return {};
return JSONAttemptParse(new RegExp('\{[\s\S]*\}').exec(resp[0].content), {}); const codeBlock = /```(?:.+)?\s*([\s\S]*?)```/.exec(resp);
const jsonStr = codeBlock ? codeBlock[1].trim() : resp;
return JSONAttemptParse(jsonStr, {});
} }
/** /**
@@ -229,7 +341,8 @@ export class LLM {
* @returns {Promise<string>} Summary * @returns {Promise<string>} Summary
*/ */
summarize(text: string, tokens: number, options?: LLMRequest): Promise<string | null> { summarize(text: string, tokens: number, options?: LLMRequest): Promise<string | null> {
return this.ask(text, {system: `Generate a brief summary <= ${tokens} tokens. Output nothing else`, temperature: 0.3, ...options}) return this.ask(text, {system: `Generate a brief summary <= ${tokens} tokens. Output nothing else`, temperature: 0.3, ...options});
.then(history => <string>history.pop()?.content || null);
} }
} }
export default LLM;

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@@ -64,13 +64,11 @@ export class OpenAi extends LLMProvider {
}, [] as any[]); }, [] as any[]);
} }
ask(message: string, options: LLMRequest = {}): AbortablePromise<LLMMessage[]> { ask(message: string, options: LLMRequest = {}): AbortablePromise<string> {
const controller = new AbortController(); const controller = new AbortController();
const response = new Promise<any>(async (res, rej) => { return Object.assign(new Promise<any>(async (res, rej) => {
let history = [...options.history || [], {role: 'user', content: message, timestamp: Date.now()}]; if(options.system && options.history?.[0]?.role != 'system') options.history?.splice(0, 0, {role: 'system', content: options.system, timestamp: Date.now()});
if(options.compress) history = await this.ai.language.compressHistory(<any>history, options.compress.max, options.compress.min, options); let history = this.fromStandard([...options.history || [], {role: 'user', content: message, timestamp: Date.now()}]);
history = this.fromStandard(<any>history);
const tools = options.tools || this.ai.options.llm?.tools || []; const tools = options.tools || this.ai.options.llm?.tools || [];
const requestParams: any = { const requestParams: any = {
model: options.model || this.model, model: options.model || this.model,
@@ -124,7 +122,7 @@ export class OpenAi extends LLMProvider {
if(!tool) return {role: 'tool', tool_call_id: toolCall.id, content: '{"error": "Tool not found"}'}; if(!tool) return {role: 'tool', tool_call_id: toolCall.id, content: '{"error": "Tool not found"}'};
try { try {
const args = JSONAttemptParse(toolCall.function.arguments, {}); const args = JSONAttemptParse(toolCall.function.arguments, {});
const result = await tool.fn(args, this.ai); const result = await tool.fn(args, options.stream, this.ai);
return {role: 'tool', tool_call_id: toolCall.id, content: JSONSanitize(result)}; return {role: 'tool', tool_call_id: toolCall.id, content: JSONSanitize(result)};
} catch (err: any) { } catch (err: any) {
return {role: 'tool', tool_call_id: toolCall.id, content: JSONSanitize({error: err?.message || err?.toString() || 'Unknown'})}; return {role: 'tool', tool_call_id: toolCall.id, content: JSONSanitize({error: err?.message || err?.toString() || 'Unknown'})};
@@ -134,10 +132,12 @@ export class OpenAi extends LLMProvider {
requestParams.messages = history; requestParams.messages = history;
} }
} while (!controller.signal.aborted && resp.choices?.[0]?.message?.tool_calls?.length); } while (!controller.signal.aborted && resp.choices?.[0]?.message?.tool_calls?.length);
history.push({role: 'assistant', content: resp.choices[0].message.content || ''});
history = this.toStandard(history);
if(options.stream) options.stream({done: true}); if(options.stream) options.stream({done: true});
res(this.toStandard([...history, {role: 'assistant', content: resp.choices[0].message.content || ''}])); if(options.history) options.history.splice(0, options.history.length, ...history);
}); res(history.at(-1)?.content);
return Object.assign(response, {abort: () => controller.abort()}); }), {abort: () => controller.abort()});
} }
} }

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@@ -2,5 +2,5 @@ import {AbortablePromise} from './ai.ts';
import {LLMMessage, LLMRequest} from './llm.ts'; import {LLMMessage, LLMRequest} from './llm.ts';
export abstract class LLMProvider { export abstract class LLMProvider {
abstract ask(message: string, options: LLMRequest): AbortablePromise<LLMMessage[]>; abstract ask(message: string, options: LLMRequest): AbortablePromise<string>;
} }

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@@ -2,6 +2,7 @@ import * as cheerio from 'cheerio';
import {$, $Sync} from '@ztimson/node-utils'; import {$, $Sync} from '@ztimson/node-utils';
import {ASet, consoleInterceptor, Http, fn as Fn} from '@ztimson/utils'; import {ASet, consoleInterceptor, Http, fn as Fn} from '@ztimson/utils';
import {Ai} from './ai.ts'; import {Ai} from './ai.ts';
import {LLMRequest} from './llm.ts';
export type AiToolArg = {[key: string]: { export type AiToolArg = {[key: string]: {
/** Argument type */ /** Argument type */
@@ -32,7 +33,7 @@ export type AiTool = {
/** Tool arguments */ /** Tool arguments */
args?: AiToolArg, args?: AiToolArg,
/** Callback function */ /** Callback function */
fn: (args: any, ai: Ai) => any | Promise<any>, fn: (args: any, stream: LLMRequest['stream'], ai: Ai) => any | Promise<any>,
}; };
export const CliTool: AiTool = { export const CliTool: AiTool = {
@@ -56,15 +57,15 @@ export const ExecTool: AiTool = {
language: {type: 'string', description: 'Execution language', enum: ['cli', 'node', 'python'], required: true}, language: {type: 'string', description: 'Execution language', enum: ['cli', 'node', 'python'], required: true},
code: {type: 'string', description: 'Code to execute', required: true} code: {type: 'string', description: 'Code to execute', required: true}
}, },
fn: async (args, ai) => { fn: async (args, stream, ai) => {
try { try {
switch(args.type) { switch(args.type) {
case 'bash': case 'bash':
return await CliTool.fn({command: args.code}, ai); return await CliTool.fn({command: args.code}, stream, ai);
case 'node': case 'node':
return await JSTool.fn({code: args.code}, ai); return await JSTool.fn({code: args.code}, stream, ai);
case 'python': { case 'python': {
return await PythonTool.fn({code: args.code}, ai); return await PythonTool.fn({code: args.code}, stream, ai);
} }
} }
} catch(err: any) { } catch(err: any) {

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@@ -13,7 +13,7 @@ export class Vision {
ocr(path: string): AbortablePromise<string | null> { ocr(path: string): AbortablePromise<string | null> {
let worker: any; let worker: any;
const p = new Promise<string | null>(async res => { const p = new Promise<string | null>(async res => {
worker = await createWorker(this.ai.options.tesseract?.model || 'eng', 2, {cachePath: this.ai.options.path}); worker = await createWorker(this.ai.options.ocr || 'eng', 2, {cachePath: this.ai.options.path});
const {data} = await worker.recognize(path); const {data} = await worker.recognize(path);
await worker.terminate(); await worker.terminate();
res(data.text.trim() || null); res(data.text.trim() || null);

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@@ -6,6 +6,7 @@ export default defineConfig({
build: { build: {
lib: { lib: {
entry: { entry: {
asr: './src/asr.ts',
index: './src/index.ts', index: './src/index.ts',
embedder: './src/embedder.ts', embedder: './src/embedder.ts',
}, },