# Changelog All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). > - **Added** for new features. > - **Changed** for changes in existing functionality. > - **Deprecated** for soon-to-be removed features. > - **Removed** for now removed features. > - **Fixed** for any bug fixes. > - **Security** in case of vulnerabilities. ## Unreleased - Add ability to create adaptors which provide access to external data sources #134 - Add access to the Electricity Maps API free tier #134 - Allow access to individual models and their internal functions #195 ## Released ### [0.16.7] - 2025-04-18 #### Changed - Automated monthly update of annual average grid intensity data. - Bump esbuild from 0.14.54 to 0.25.0 ### [0.16.6] - 2025-02-10 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.16.5] - 2025-01-20 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.16.4] - 2024-12-10 #### Changed - Separate options parsing for byteTrace and visitTrace functions in #226 - Automated monthly update of annual average grid intensity data. ### [0.16.3] - 2024-11-30 #### Fixed - Include all gridIntensity values when running the perVisitTrace or perByteTrace functions. #237 ### [0.16.2] - 2024-11-12 #### _Added_ - Add JSDoc comments to data generation scripts and outputs #230 - Added basic error handling to data fetch in emissions script #221 #### Fixed - Bump url2green version #238 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.16.1] - 2024-09-10 #### Changed - _[Experimental]_ Add minimum capability to publish CO2.js to JSR. - Automated monthly update of annual average grid intensity data. ### [0.16.0] - 2024-07-01 #### _Added_ - Add the Sustainable Web Design Rating system #205 - Add the updated Sustainable Web Design Model version 4 #119 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.15.0] - 2024-05-03 #### Changed - Add access to more verbose data response from Greencheck API #### Removed - Removed Page X-ray specific functions: - `perDomain` - `perPage` - `perContentType` - `dirtiestResources` - `perParty` ### [0.14.4] - 2024-03-08 #### Changed - Automated monthly update of annual average grid intensity data. #### Deprecated - Removing Page X-ray specific functions: - `perDomain` - `perPage` - `perContentType` - `dirtiestResources` - `perParty` ### [0.14.3] - 2024-02-21 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.14.2] - 2024-01-29 - Adds user agent header for requests to Green Web Foundation APIs ### [0.14.1] - 2024-01-09 #### Changed - Removed `index.d.ts` in favour of importing type definitions from `@types/tgwf__co2`. - Reduce package size by excluding files from publish NPM package. - Automated monthly update of annual average grid intensity data. ### [0.13.10] - 2023-12-16 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.13.9] - 2023-11-07 #### Fixed - Fix to return expected results when variables with 0 value are passed into function #### Changed - Automated monthly update of annual average grid intensity data. ### [0.13.8] - 2023-10-09 #### Fixed - Properly use value of 0 for system segments and variables in the perByteTrace and perVisitTrace functions. #### Changed - Automated monthly update of annual average grid intensity data. ### [0.13.7] - 2023-09-13 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.13.6] - 2023-08-08 #### Changed - Automated monthly update of annual average grid intensity data. - Create FUNDING.yml to allow sponsor contribution to this project. - Store segment flag on CO2 instance, not models. ### [0.13.5] - 2023-07-5 #### Changed - Automated monthly update of annual average grid intensity data. ### [0.13.4] - 2023-05-24 #### Fixed - Fixed an error when try to use global grid intensities in IIFE. (PR #147) ### [0.13.3] - 2023-05-18 #### Changed - Updated the global grid intensity constant to use the latest WORLD grid intensity value from Ember. (PR #142) ### [0.13.2] - 2023-04-21 - Fix to ensure that region names that are keys in the average annual grid intensity export are capitalised. ### [0.13.1] - 2023-04-20 #### Fixed - Fixed the import of average grid intensities in node. (PR #137) ### [0.13.0] - 2023-04-13 #### Changed In PR #135 there were significant changes made to how average annual grid intensities are fetched and generated. - Updated average annual grid intensities to include 2022 values from Ember. - Changed the functions to generate average grid intensities to: - Fetch data directly from Ember's API. - Get the _latest_ annual average values for each country/region. - Renamed the average grid intensities export file. ### [0.12.2] - 2023-03-01 #### Added - Add a module declaration for use from typescript (PR #131) #### Changed - Updated 2021 average annual grid intensity values (PR #133) ### [0.12.1] - 2023-02-02 #### Fixed - Removed incorrectly imported constants in tests. ### [0.12.0] - 2023-02-02 #### Added - Introduced two new functions `perByteTrace` and `perVisitTrace` which allow developers to pass an options object containing customised values for the constants used in the Sustainable Web Design model. (PR #126) #### Changed - Allowed developers now have the option to return a breakdown of carbon emissions estimates by system segment when using the Sustainable Web Design model. (PR #113) ### [0.11.4] - 2022-12-02 #### Fixed - Updated the `greenCheckMulti` function to work properly in ESM. (PR #123) ### [0.11.3] - 2022-10-13 #### Fixed - Corrected the Node export for the hosting raised in issue #110. (PR #118) ### [0.11.2] - 2022-10-11 #### Fixed - v0.11.x updates increased library size to 17MB + when published to NPM. This has been raised in [#108](https://github.com/thegreenwebfoundation/co2.js/issues/108) and it was found data files were being included in the published package. (PR #117) ### [0.11.1] - 2022-10-07 #### Changed - We have used generic filenames for data files, to avoid any confusion around the data being provided in this library. (PR #112) ### [0.11.0] - 2022-10-03 #### Added - Introduced average and marginal carbon intensity data into the library. This comes from [Ember Climate](https://ember-climate.org/data/data-explorer/) (for average carbon intensity data), and [The Green Web Foundation](https://developers.thegreenwebfoundation.org/co2js/data) (marginal intensity data, originally sourced from the UNFCCC - the United Nations Framework Convention on Climate Change). For more, [see our release guide for v0.11](https://www.thegreenwebfoundation.org/news/release-guide-co2-js-v0-11/) about the differences between the kinds of data. See [#64](https://github.com/thegreenwebfoundation/co2.js/issues/64), and [#97](https://github.com/thegreenwebfoundation/co2.js/issues/97) for more. - Added new paths to `import` and `require` the annual, country-level average and marginal carbon intensity data mentioned above like, as javascript objects, or as JSON. See [#104 for more](https://github.com/thegreenwebfoundation/co2.js/issues/104). - Added links to CO2.js in forms already available on CDNs to avoid needing to npm install it to try it out. See [#105 for more](https://github.com/thegreenwebfoundation/co2.js/issues/105). - Introduced scripts to automate the generation of grid intensity data based of Ember & UNFCCC source files. - Introduced a `release:minor` command, to automate the publishing process, to complement `release:patch`. #### Changed - Changed the default model for transfer based CO2 calculations from the _1byte_ model to the _Sustainable Web Design_ model instead. See for guidance on the differences and how to migrate between them. See [#94 for more](https://github.com/thegreenwebfoundation/co2.js/issues/94). - Updated our release commands to generate and format the carbon intensity data as part of the release process. ### [0.10.4] - 2022-08-12 #### Added - Introduced a `release:patch` command, to automate the publishing process. This is designed to make sure we always publish the most recent compiled code, by adding a rebuild step that can be easy to forget. ### [0.10.3] - 2022-08-12 #### Added - Introduced a new `perVisit()` function for the Sustainable Web Design model, which applies [caching and return visits assumptions](https://sustainablewebdesign.org/calculating-digital-emissions/). ### [0.10.2] - 2022-08-12 - Added the ability to set the model used by CO2.js to the Sustainable Web Design model, using a simple 'swd' string, instead of needing to pass in a class. ### [0.10.1] - 2022-08-01 This release used a version bump as previously we had released v0.10.0 under a pre-release tag. ### [0.10.0] - 2022-06-27 - Added ES import syntax as the main way for handling imports and exports of code within the module. - Changed eslint settings to use later version of ecmascript (2020) - Change the build tools to use esbulid with jest instead of babel - Added more consistent use of the debug logging library in files using the updated import syntax - Fixed the incorrect order of FIRST_TIME_VIEWING_PERCENTAGE and RETURNING_VISITOR_PERCENTAGE constants in the SWD model. This will result in **larger** values for calculations using the sustainable web design, and the default caching assumptions. ### [0.9.0] - 2022-03-28 #### Added - Added newly implemented Sustainable Web Design model [thanks @dryden!] - Added new readme page for using both emissions models - Added new source of data to the Sustainable Web Design model from Ember Climate. #### Changed - Changed the CO2 class to accept either the One Byte model or the Sustainable Web Design model #### Fixed - Fixed various typos. ### [0.8.0] - 2021-11-28 ####  Fixed - Update further dependencies - Fix embarassing order of magnitude typo in 1byte model (thanks @mstaschik!) #### Added - Read JSON blob also as gzipped #44 (thanks @soulgalore) #### Changed - The 1byte model will give different numbers now. It's mentioned in `#fixed` but it's worth repeating. ### [0.7.0] - 2021-11-28 #### Fixed - Update tests to avoid network requests #50 - Update dependencies across the board ####  Changed - Switch to github actions instead of travis for CI. ### [0.6.1] - 2020-03-15 #### Fixed - Added the function to load JSON, on the tgwg.hosting object, for use in the sustaiable web sitespeed plugin. ### [0.6.0] - 2020-03-15 #### Added - Added the hosting-JSON for running local checks against an array instead of SQLite. #### Changed - Swapped out checking against a sqlite database `hosting-json`in favour of simple array in, - Updated conventions for style - using kebab-cases over CamelCase for naming files #### Removed - Extracted sqlite usage and dependencies into a separate module, `url2green`. This means you no longer need to compile SQLite on install. ### [0.5.0] - 2020-03-03 #### Changed - Updated README - Updated the emissions figured for green energy after further research on methodology with @@JamieBeevor - Incorporated class based CO2 models from @soulgalore - Credit contributors ### [0.4.7] - 2020-03-02 #### Added - Added a changelog at last! ### [0.4.6] - 2020-03-01 #### Added - Changelog inconsistency section in Bad Practices ### [0.4.4] - 2020-03-01 #### Added Added the (currently unused) green byte model. #### Changed Update the 1byte model to use an average of devices, rather than just wifi ### [0.4.3] - 2020-03-01 #### Added #### Changed Split hosting API into two separate files (one for sqlite, and one relying on the greencheck API)