ai-alt-text/dist/index.js

Generate alt text for images using Replicate and BLIP

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = generateAltText;
const replicate_1 = __importDefault(require("replicate"));
const errors_1 = require("./errors");
const utils_1 = require("./utils");
async function generateAltText(imageUrl, options = {}) {
    if (!(0, utils_1.isValidUrl)(imageUrl)) {
        throw new errors_1.InvalidImageUrlError(imageUrl);
    }
    const { prompt = "Describe this image concisely for use as alt text", apiToken = process.env.REPLICATE_API_TOKEN, model = "salesforce/blip:2e1dddc8621f72155f24cf2e0adbde548458d3cab9f00c0139eea840d0ac4746", } = options;
    if (!apiToken) {
        throw new errors_1.MissingApiTokenError();
    }
    try {
        const replicate = new replicate_1.default({
            auth: apiToken,
        });
        const output = await replicate.run(model, {
            input: {
                image: imageUrl,
                question: prompt,
            },
        });
        let altText = (0, utils_1.cleanAltText)(output);
        return altText;
    }
    catch (error) {
        console.error("Error generating alt text: ", error);
        return "An image";
    }
}