@llamaindex/core
Version:
LlamaIndex Core Module
462 lines (458 loc) • 16.7 kB
JavaScript
import { randomUUID } from '@llamaindex/env';
import { wrapEventCaller } from '../../decorator/dist/index.js';
import { Settings } from '../../global/dist/index.js';
import { PromptMixin } from '../../prompts/dist/index.js';
import { getResponseSynthesizer } from '../../response-synthesizers/dist/index.js';
import { extractText } from '../../utils/dist/index.js';
function applyDecs2203RFactory() {
function createAddInitializerMethod(initializers, decoratorFinishedRef) {
return function addInitializer(initializer) {
assertNotFinished(decoratorFinishedRef, "addInitializer");
assertCallable(initializer, "An initializer");
initializers.push(initializer);
};
}
function memberDec(dec, name, desc, initializers, kind, isStatic, isPrivate, metadata, value) {
var kindStr;
switch(kind){
case 1:
kindStr = "accessor";
break;
case 2:
kindStr = "method";
break;
case 3:
kindStr = "getter";
break;
case 4:
kindStr = "setter";
break;
default:
kindStr = "field";
}
var ctx = {
kind: kindStr,
name: isPrivate ? "#" + name : name,
static: isStatic,
private: isPrivate,
metadata: metadata
};
var decoratorFinishedRef = {
v: false
};
ctx.addInitializer = createAddInitializerMethod(initializers, decoratorFinishedRef);
var get, set;
if (kind === 0) {
if (isPrivate) {
get = desc.get;
set = desc.set;
} else {
get = function() {
return this[name];
};
set = function(v) {
this[name] = v;
};
}
} else if (kind === 2) {
get = function() {
return desc.value;
};
} else {
if (kind === 1 || kind === 3) {
get = function() {
return desc.get.call(this);
};
}
if (kind === 1 || kind === 4) {
set = function(v) {
desc.set.call(this, v);
};
}
}
ctx.access = get && set ? {
get: get,
set: set
} : get ? {
get: get
} : {
set: set
};
try {
return dec(value, ctx);
} finally{
decoratorFinishedRef.v = true;
}
}
function assertNotFinished(decoratorFinishedRef, fnName) {
if (decoratorFinishedRef.v) {
throw new Error("attempted to call " + fnName + " after decoration was finished");
}
}
function assertCallable(fn, hint) {
if (typeof fn !== "function") {
throw new TypeError(hint + " must be a function");
}
}
function assertValidReturnValue(kind, value) {
var type = typeof value;
if (kind === 1) {
if (type !== "object" || value === null) {
throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
}
if (value.get !== undefined) {
assertCallable(value.get, "accessor.get");
}
if (value.set !== undefined) {
assertCallable(value.set, "accessor.set");
}
if (value.init !== undefined) {
assertCallable(value.init, "accessor.init");
}
} else if (type !== "function") {
var hint;
if (kind === 0) {
hint = "field";
} else if (kind === 10) {
hint = "class";
} else {
hint = "method";
}
throw new TypeError(hint + " decorators must return a function or void 0");
}
}
function applyMemberDec(ret, base, decInfo, name, kind, isStatic, isPrivate, initializers, metadata) {
var decs = decInfo[0];
var desc, init, value;
if (isPrivate) {
if (kind === 0 || kind === 1) {
desc = {
get: decInfo[3],
set: decInfo[4]
};
} else if (kind === 3) {
desc = {
get: decInfo[3]
};
} else if (kind === 4) {
desc = {
set: decInfo[3]
};
} else {
desc = {
value: decInfo[3]
};
}
} else if (kind !== 0) {
desc = Object.getOwnPropertyDescriptor(base, name);
}
if (kind === 1) {
value = {
get: desc.get,
set: desc.set
};
} else if (kind === 2) {
value = desc.value;
} else if (kind === 3) {
value = desc.get;
} else if (kind === 4) {
value = desc.set;
}
var newValue, get, set;
if (typeof decs === "function") {
newValue = memberDec(decs, name, desc, initializers, kind, isStatic, isPrivate, metadata, value);
if (newValue !== void 0) {
assertValidReturnValue(kind, newValue);
if (kind === 0) {
init = newValue;
} else if (kind === 1) {
init = newValue.init;
get = newValue.get || value.get;
set = newValue.set || value.set;
value = {
get: get,
set: set
};
} else {
value = newValue;
}
}
} else {
for(var i = decs.length - 1; i >= 0; i--){
var dec = decs[i];
newValue = memberDec(dec, name, desc, initializers, kind, isStatic, isPrivate, metadata, value);
if (newValue !== void 0) {
assertValidReturnValue(kind, newValue);
var newInit;
if (kind === 0) {
newInit = newValue;
} else if (kind === 1) {
newInit = newValue.init;
get = newValue.get || value.get;
set = newValue.set || value.set;
value = {
get: get,
set: set
};
} else {
value = newValue;
}
if (newInit !== void 0) {
if (init === void 0) {
init = newInit;
} else if (typeof init === "function") {
init = [
init,
newInit
];
} else {
init.push(newInit);
}
}
}
}
}
if (kind === 0 || kind === 1) {
if (init === void 0) {
init = function(instance, init) {
return init;
};
} else if (typeof init !== "function") {
var ownInitializers = init;
init = function(instance, init) {
var value = init;
for(var i = 0; i < ownInitializers.length; i++){
value = ownInitializers[i].call(instance, value);
}
return value;
};
} else {
var originalInitializer = init;
init = function(instance, init) {
return originalInitializer.call(instance, init);
};
}
ret.push(init);
}
if (kind !== 0) {
if (kind === 1) {
desc.get = value.get;
desc.set = value.set;
} else if (kind === 2) {
desc.value = value;
} else if (kind === 3) {
desc.get = value;
} else if (kind === 4) {
desc.set = value;
}
if (isPrivate) {
if (kind === 1) {
ret.push(function(instance, args) {
return value.get.call(instance, args);
});
ret.push(function(instance, args) {
return value.set.call(instance, args);
});
} else if (kind === 2) {
ret.push(value);
} else {
ret.push(function(instance, args) {
return value.call(instance, args);
});
}
} else {
Object.defineProperty(base, name, desc);
}
}
}
function applyMemberDecs(Class, decInfos, metadata) {
var ret = [];
var protoInitializers;
var staticInitializers;
var existingProtoNonFields = new Map();
var existingStaticNonFields = new Map();
for(var i = 0; i < decInfos.length; i++){
var decInfo = decInfos[i];
if (!Array.isArray(decInfo)) continue;
var kind = decInfo[1];
var name = decInfo[2];
var isPrivate = decInfo.length > 3;
var isStatic = kind >= 5;
var base;
var initializers;
if (isStatic) {
base = Class;
kind = kind - 5;
staticInitializers = staticInitializers || [];
initializers = staticInitializers;
} else {
base = Class.prototype;
protoInitializers = protoInitializers || [];
initializers = protoInitializers;
}
if (kind !== 0 && !isPrivate) {
var existingNonFields = isStatic ? existingStaticNonFields : existingProtoNonFields;
var existingKind = existingNonFields.get(name) || 0;
if (existingKind === true || existingKind === 3 && kind !== 4 || existingKind === 4 && kind !== 3) {
throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + name);
} else if (!existingKind && kind > 2) {
existingNonFields.set(name, kind);
} else {
existingNonFields.set(name, true);
}
}
applyMemberDec(ret, base, decInfo, name, kind, isStatic, isPrivate, initializers, metadata);
}
pushInitializers(ret, protoInitializers);
pushInitializers(ret, staticInitializers);
return ret;
}
function pushInitializers(ret, initializers) {
if (initializers) {
ret.push(function(instance) {
for(var i = 0; i < initializers.length; i++){
initializers[i].call(instance);
}
return instance;
});
}
}
function applyClassDecs(targetClass, classDecs, metadata) {
if (classDecs.length > 0) {
var initializers = [];
var newClass = targetClass;
var name = targetClass.name;
for(var i = classDecs.length - 1; i >= 0; i--){
var decoratorFinishedRef = {
v: false
};
try {
var nextNewClass = classDecs[i](newClass, {
kind: "class",
name: name,
addInitializer: createAddInitializerMethod(initializers, decoratorFinishedRef),
metadata
});
} finally{
decoratorFinishedRef.v = true;
}
if (nextNewClass !== undefined) {
assertValidReturnValue(10, nextNewClass);
newClass = nextNewClass;
}
}
return [
defineMetadata(newClass, metadata),
function() {
for(var i = 0; i < initializers.length; i++){
initializers[i].call(newClass);
}
}
];
}
}
function defineMetadata(Class, metadata) {
return Object.defineProperty(Class, Symbol.metadata || Symbol.for("Symbol.metadata"), {
configurable: true,
enumerable: true,
value: metadata
});
}
return function applyDecs2203R(targetClass, memberDecs, classDecs, parentClass) {
if (parentClass !== void 0) {
var parentMetadata = parentClass[Symbol.metadata || Symbol.for("Symbol.metadata")];
}
var metadata = Object.create(parentMetadata === void 0 ? null : parentMetadata);
var e = applyMemberDecs(targetClass, memberDecs, metadata);
if (!classDecs.length) defineMetadata(targetClass, metadata);
return {
e: e,
get c () {
return applyClassDecs(targetClass, classDecs, metadata);
}
};
};
}
function _apply_decs_2203_r(targetClass, memberDecs, classDecs, parentClass) {
return (_apply_decs_2203_r = applyDecs2203RFactory())(targetClass, memberDecs, classDecs, parentClass);
}
var _initProto;
class BaseQueryEngine extends PromptMixin {
static{
({ e: [_initProto] } = _apply_decs_2203_r(this, [
[
wrapEventCaller,
2,
"query"
]
], []));
}
constructor(...args){
super(...args), _initProto(this);
}
async retrieve(params) {
throw new Error("This query engine does not support retrieve, use query directly");
}
async query(params) {
const { stream, query } = params;
const id = randomUUID();
const callbackManager = Settings.callbackManager;
callbackManager.dispatchEvent("query-start", {
id,
query
});
const response = await this._query(query, stream);
callbackManager.dispatchEvent("query-end", {
id,
response
});
return response;
}
}
class RetrieverQueryEngine extends BaseQueryEngine {
constructor(retriever, responseSynthesizer, nodePostprocessors){
super();
this.retriever = retriever;
this.responseSynthesizer = responseSynthesizer || getResponseSynthesizer("compact");
this.nodePostprocessors = nodePostprocessors || [];
}
async _query(strOrQueryBundle, stream) {
const nodesWithScore = await this.retrieve(typeof strOrQueryBundle === "string" ? strOrQueryBundle : extractText(strOrQueryBundle));
if (stream) {
return this.responseSynthesizer.synthesize({
query: typeof strOrQueryBundle === "string" ? {
query: strOrQueryBundle
} : strOrQueryBundle,
nodes: nodesWithScore
}, true);
}
return this.responseSynthesizer.synthesize({
query: typeof strOrQueryBundle === "string" ? {
query: strOrQueryBundle
} : strOrQueryBundle,
nodes: nodesWithScore
});
}
_getPrompts() {
return {};
}
_updatePrompts() {}
_getPromptModules() {
return {
responseSynthesizer: this.responseSynthesizer
};
}
async applyNodePostprocessors(nodes, query) {
let nodesWithScore = nodes;
for (const postprocessor of this.nodePostprocessors){
nodesWithScore = await postprocessor.postprocessNodes(nodesWithScore, query);
}
return nodesWithScore;
}
async retrieve(query) {
const nodes = await this.retriever.retrieve(query);
const messageContent = typeof query === "string" ? query : query.query;
return await this.applyNodePostprocessors(nodes, messageContent);
}
}
export { BaseQueryEngine, RetrieverQueryEngine };