How Fugu is the Web?

An extension to shine light on the Project Fugu 🐡 APIs web apps want to use.

What is How Fugu is the Web??

How Fugu is the Web? is a Chrome extension that detects and highlights the usage of Project Fugu APIs in web apps. It provides information on the supported APIs based on the browser and allows for deep-linking to the occurrences of detected APIs.

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Extension stats

By: Thomas Steiner

View on Chrome Web Store

Users: 60 ▼ -1

Version: 1.19.1 (Last updated: 2024-07-30)

Creation date: 2021-06-23

Risk impact: High risk impact

Risk likelihood: Moderate risk likelihood

Manifest version: 3

Permissions:

activeTab
webRequest
webNavigation

Host permissions:

https://*/*

Size: 130.05K

Email: st*****@gmail.com

URLs: Privacy policy

Ranking

# 79105 ▼ 541

Other rankings

#9088 in Developer Tools ▼ 54 #171 in example keyword 2 ▼ 2 #275 in detect keyword 18 #283 in javascript keyword 44 ▼ 2

Other platforms

Not available on Firefox

Not available on Edge

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Extension summary

Analyze keywords

How it works

API data

The raw data for the different Project Fugu 🐡 APIs is curated in a spreadsheet, which is then turned into JavaScript, so keeping the list of APIs updated is hopefully a straightforward task.

API detection

The extension monitors the requests a page makes via the chrome.webRequest.onBeforeRequest.addListener() API. Each response body, grouped by main frame, JavaScript, and Web App Manifest response bodies, is then run through a set of regular expressions like /navigator.hid.requestDevice\s*(/g to determine if the code hints at a Project Fugu 🐡 API potentially being used.

Browser support detection

Most Project Fugu 🐡 APIs are easily feature-detectable by checking for the existence of interfaces or properties, for example, as in 'BarcodeDetector' in window. Other APIs require a ServiceWorkerRegistration, but luckily the popup window in Manifest V3 extensions uses a service worker, so it can be used via an IIFE that can be run in the client or the service worker. An example is (async () => 'periodicSync' in (await navigator.serviceWorker?.ready || self.registration))().

The support categories are listed below: