feat!: drop IE 11 and modernize browser targets#946
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- Remove core-js@3.1.4 (rebase artifact from PR #946) - Fix JS config to use extends pattern instead of redundant spread Co-Authored-By: Claude <noreply@anthropic.com>
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BREAKING CHANGE: Drop IE 11, Safari 8, iOS 8, Android 4.4 browser support. Minimum browser targets are now rolling modern versions aligned with Shopify Online Store themes. The library now emits ES2015+ JavaScript (native classes, arrow functions, template literals) and no longer transpiles to ES5. - Update browserslist to union of @shopify/browserslist-config + Theme Store requirements - Remove 15 Babel ES5 transform plugins + dead @babel/plugin-external-helpers - Remove 7 polyfill imports from buybutton.js (whatwg-fetch, core-js/*) - Replace UglifyJS with terser for ES2015+-compatible minification - Add terser error guard against silent minification failure - Keep @babel/plugin-transform-modules-commonjs for Browserify test pipeline (until Vite migration) - Native ES2015 classes replace loose-mode Babel classes (non-enumerable prototype methods) - Create major changeset for 4.0.0 version bump - Update docs/index.md browser support table - Pin pnpm/action-setup to commit SHA in ci.yml (supply chain hardening) Co-Authored-By: Claude <noreply@anthropic.com>
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Part of https://github.com/Shopify/developer-tools-team/issues/1195
BREAKING CHANGE: Drop IE 11, Safari 8, iOS 8, Android 4.4 browser support.
Minimum browser targets are now rolling modern versions aligned with
Shopify Online Store themes. The library now emits ES2015+ JavaScript
(native classes, arrow functions, template literals) and no longer
transpiles to ES5.
requirements
(until PR 7a)
prototype methods)