mihawk/dist/esm/src/middlewares/favicon.js

A tiny & simple mock server tool, support json,js,cjs,ts(typescript).

'use strict';
import { readFileSync, existsSync } from 'fs-extra';
import { absifyPath } from '../utils/path';
import { isNil } from '../utils/is';
import { PKG_NAME } from '../consts';
const ICON_BASE64 = 'data:image/x-icon;base64,8J+YgQ==';
const ICON_MIME = 'image/x-icon';
export default function favicon(faviconPath, options) {
    faviconPath = absifyPath(faviconPath);
    const isExisted = existsSync(faviconPath);
    const iconFile = isExisted ? readFileSync(faviconPath) : ICON_BASE64;
    let { maxAge, mime } = options || {};
    maxAge = isNil(maxAge) ? 86400000 : Math.min(Math.max(0, maxAge), 31556926000);
    mime = isExisted ? mime : ICON_MIME;
    const cacheControl = `public, max-age=${(maxAge / 1000) | 0}`;
    return async function (ctx, next) {
        const { path, method } = ctx || {};
        if (['/favicon.ico', '/favicon.png', '/favicon.svg'].some(p => p === path)) {
            ctx.skipDefaultMock = true;
            if (!['GET', 'HEAD'].includes(method)) {
                ctx.status = 'OPTIONS' == method ? 200 : 405;
                ctx.set('Allow', 'GET, HEAD, OPTIONS');
            }
            else {
                ctx.set('X-Powered-By', PKG_NAME);
                ctx.set('Cache-Control', cacheControl);
                ctx.type = mime || ICON_MIME;
                ctx.body = iconFile;
            }
        }
        else {
            return next();
        }
    };
}