gmail-getter/dist/parse-html-from-email.js

A simple tool that gets emails from the Gmail API

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseHtmlFromEmail = void 0;
/**
 * Parse HTML from email
 * @param {Email} email Email content
 * @returns {string} HTML content
 * @example const html = parseHtmlFromEmail(email)
 */
const parseHtmlFromEmail = (email) => {
    if (!email) {
        throw new Error('Failed to parse HTML from email - the email object is null or undefined.');
    }
    let mimeType;
    try {
        mimeType = email.payload.mimeType;
    }
    catch {
        throw new Error(`Failed to parse HTML from email - the email mime type is not set.
        \n${JSON.stringify(email)}`);
    }
    if (!mimeType) {
        throw new Error('Failed to parse HTML from email - the email mime type is not set.');
    }
    if (!mimeType.includes('multipart')) {
        let data;
        try {
            data = email.payload.body.data;
            if (typeof data !== 'string') {
                throw new Error();
            }
        }
        catch {
            throw new Error(`Failed to parse HTML from email - the email data is invalid.
          \n${JSON.stringify(email)}`);
        }
        return Buffer.from(data, 'base64').toString('ascii');
    }
    let parts;
    try {
        parts = email.payload.parts;
        if (!Array.isArray(parts)) {
            throw new Error();
        }
    }
    catch {
        throw new Error(`Failed to parse HTML from email - the email parts are invalid.
        \n${JSON.stringify(email.payload.parts)}`);
    }
    const part = parts.find(part => part.mimeType === 'text/html');
    if (!part) {
        throw new Error(`Failed to parse HTML from email - couldn't find HTML body part in the email.
        \n${JSON.stringify(parts)}`);
    }
    let data;
    try {
        data = part.body.data;
        if (typeof data !== 'string') {
            throw new Error();
        }
    }
    catch {
        throw new Error(`Failed to parse HTML from email - the email data is invalid.
        \n${JSON.stringify(part)}`);
    }
    return Buffer.from(part.body.data, 'base64').toString('ascii');
};
exports.parseHtmlFromEmail = parseHtmlFromEmail;