From 6e1e876934b5d906d4557dc25073991f8c68c1a3 Mon Sep 17 00:00:00 2001
From: jan <jan.boehmerle@ledbrain.de>
Date: Thu, 26 Dec 2024 18:21:11 +0100
Subject: [PATCH] feat(plugin-legacy): allow excluding polyfills
---
packages/plugin-legacy/README.md | 12 ++++++++++++
packages/plugin-legacy/src/index.ts | 11 +++++++++++
packages/plugin-legacy/src/types.ts | 2 ++
3 files changed, 25 insertions(+)
diff --git a/packages/plugin-legacy/README.md b/packages/plugin-legacy/README.md
index ad90980609a285..023b71d47a7dca 100644
--- a/packages/plugin-legacy/README.md
+++ b/packages/plugin-legacy/README.md
@@ -74,12 +74,24 @@ npm add -D terser
Add custom imports to the legacy polyfills chunk. Since the usage-based polyfill detection only covers ES language features, it may be necessary to manually specify additional DOM API polyfills using this option.
+### `excludeLegacyPolyfills`
+
+- **Type:** `string[]`
+
+ Exclude imports from legacy polyfills. Can be used to exclude polyfills from being included although detected by `@babel/preset-env`.
+
### `additionalModernPolyfills`
- **Type:** `string[]`
Add custom imports to the modern polyfills chunk. Since the usage-based polyfill detection only covers ES language features, it may be necessary to manually specify additional DOM API polyfills using this option.
+### `excludeModernPolyfills`
+
+- **Type:** `string[]`
+
+ Exclude imports from modern polyfills. Can be used to exclude polyfills from being included although detected by `@babel/preset-env`.
+
### `modernPolyfills`
- **Type:** `boolean | string[]`
diff --git a/packages/plugin-legacy/src/index.ts b/packages/plugin-legacy/src/index.ts
index d356793b231c72..3c84a31f3a3e55 100644
--- a/packages/plugin-legacy/src/index.ts
+++ b/packages/plugin-legacy/src/index.ts
@@ -295,6 +295,12 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
for (const { modern } of chunkFileNameToPolyfills.values()) {
modern.forEach((p) => modernPolyfills.add(p))
}
+ // Remove explicitly excluded polyfills
+ if (Array.isArray(options.excludeModernPolyfills)) {
+ options.excludeModernPolyfills.forEach((p) =>
+ modernPolyfills.delete(p),
+ )
+ }
if (!modernPolyfills.size) {
return
}
@@ -338,6 +344,11 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
)
}
+ // Remove explicitly excluded polyfills
+ if (Array.isArray(options.excludeLegacyPolyfills)) {
+ options.excludeLegacyPolyfills.forEach((p) => legacyPolyfills.delete(p))
+ }
+
if (legacyPolyfills.size || !options.externalSystemJS) {
if (isDebug) {
console.log(
diff --git a/packages/plugin-legacy/src/types.ts b/packages/plugin-legacy/src/types.ts
index f8a5a95268dcae..d6c5b87d2bc3a9 100644
--- a/packages/plugin-legacy/src/types.ts
+++ b/packages/plugin-legacy/src/types.ts
@@ -12,7 +12,9 @@ export interface Options {
*/
polyfills?: boolean | string[]
additionalLegacyPolyfills?: string[]
+ excludeLegacyPolyfills?: string[]
additionalModernPolyfills?: string[]
+ excludeModernPolyfills?: string[]
/**
* default: false
*/