agsamantha/node_modules/langchain/dist/document_loaders/fs/json.js

import jsonpointer from "jsonpointer";
import { TextLoader } from "./text.js";
/**
 * Class that extends the `TextLoader` class. It represents a document
 * loader that loads documents from JSON files. It has a constructor that
 * takes a `filePathOrBlob` parameter representing the path to the JSON
 * file or a `Blob` object, and an optional `pointers` parameter that
 * specifies the JSON pointers to extract.
 */
export class JSONLoader extends TextLoader {
    constructor(filePathOrBlob, pointers = []) {
        super(filePathOrBlob);
        Object.defineProperty(this, "pointers", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        this.pointers = Array.isArray(pointers) ? pointers : [pointers];
    }
    /**
     * Method that takes a `raw` string as a parameter and returns a promise
     * that resolves to an array of strings. It parses the raw JSON string and
     * extracts the values based on the specified JSON pointers. If no JSON
     * pointers are specified, it extracts all the strings from the JSON
     * object.
     * @param raw The raw JSON string to parse.
     * @returns A promise that resolves to an array of strings.
     */
    async parse(raw) {
        const json = JSON.parse(raw.trim());
        // If there is no pointers specified we extract all strings we found
        const extractAllStrings = !(this.pointers.length > 0);
        const compiledPointers = this.pointers.map((pointer) => jsonpointer.compile(pointer));
        return this.extractArrayStringsFromObject(json, compiledPointers, extractAllStrings);
    }
    /**
     * If JSON pointers are specified, return all strings below any of them
     * and exclude all other nodes expect if they match a JSON pointer (to allow to extract strings from different levels)
     *
     * If no JSON pointer is specified then return all string in the object
     */
    extractArrayStringsFromObject(
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    json, pointers, extractAllStrings = false, keyHasBeenFound = false) {
        if (!json) {
            return [];
        }
        if (typeof json === "string" && extractAllStrings) {
            return [json];
        }
        if (Array.isArray(json) && extractAllStrings) {
            let extractedString = [];
            for (const element of json) {
                extractedString = extractedString.concat(this.extractArrayStringsFromObject(element, pointers, true));
            }
            return extractedString;
        }
        if (typeof json === "object") {
            if (extractAllStrings) {
                return this.extractArrayStringsFromObject(Object.values(json), pointers, true);
            }
            const targetedEntries = this.getTargetedEntries(json, pointers);
            const thisLevelEntries = Object.values(json);
            const notTargetedEntries = thisLevelEntries.filter((entry) => !targetedEntries.includes(entry));
            let extractedStrings = [];
            // If we found a targeted entry, we extract all strings from it
            if (targetedEntries.length > 0) {
                for (const oneEntry of targetedEntries) {
                    extractedStrings = extractedStrings.concat(this.extractArrayStringsFromObject(oneEntry, pointers, true, true));
                }
                for (const oneEntry of notTargetedEntries) {
                    extractedStrings = extractedStrings.concat(this.extractArrayStringsFromObject(oneEntry, pointers, false, true));
                }
            }
            else if (extractAllStrings || !keyHasBeenFound) {
                for (const oneEntry of notTargetedEntries) {
                    extractedStrings = extractedStrings.concat(this.extractArrayStringsFromObject(oneEntry, pointers, extractAllStrings));
                }
            }
            return extractedStrings;
        }
        return [];
    }
    /**
     * Method that takes a `json` object and an array of `pointers` as
     * parameters and returns an array of targeted entries. It iterates over
     * the JSON pointers and uses the `jsonpointer.get()` function to get the
     * targeted entries from the JSON object.
     * @param json The JSON object to get targeted entries from.
     * @param pointers The JSON pointers to get targeted entries.
     * @returns An array of targeted entries.
     */
    getTargetedEntries(json, pointers) {
        const targetEntries = [];
        for (const pointer of pointers) {
            const targetedEntry = pointer.get(json);
            if (targetedEntry) {
                targetEntries.push(targetedEntry);
            }
        }
        return targetEntries;
    }
}
/**
 * Class that extends the `TextLoader` class. It represents a document
 * loader that loads documents from JSON Lines files. It has a constructor
 * that takes a `filePathOrBlob` parameter representing the path to the
 * JSON Lines file or a `Blob` object, and a `pointer` parameter that
 * specifies the JSON pointer to extract.
 */
export class JSONLinesLoader extends TextLoader {
    constructor(filePathOrBlob, pointer) {
        super(filePathOrBlob);
        Object.defineProperty(this, "pointer", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: pointer
        });
    }
    /**
     * Method that takes a `raw` string as a parameter and returns a promise
     * that resolves to an array of strings. It parses the raw JSON Lines
     * string, splits it into lines, parses each line as JSON, and extracts
     * the values based on the specified JSON pointer.
     * @param raw The raw JSON Lines string to parse.
     * @returns A promise that resolves to an array of strings.
     */
    async parse(raw) {
        const lines = raw.split("\n");
        const jsons = lines
            .map((line) => line.trim())
            .filter(Boolean)
            .map((line) => JSON.parse(line));
        const pointer = jsonpointer.compile(this.pointer);
        return jsons.map((json) => pointer.get(json));
    }
}