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feat!: drop support for IE 11 #1628

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b39e287
rm ie 11
rishav-karanjit Feb 17, 2026
9e57f2d
empty commit
rishav-karanjit Feb 18, 2026
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1 change: 0 additions & 1 deletion modules/web-crypto-backend/package.json
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Expand Up @@ -19,7 +19,6 @@
},
"license": "Apache-2.0",
"dependencies": {
"@aws-crypto/ie11-detection": "4.0.0",
"@aws-crypto/supports-web-crypto": "5.2.0",
"@aws-sdk/util-locate-window": "3.310.0",
"tslib": "^2.2.0"
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2 changes: 0 additions & 2 deletions modules/web-crypto-backend/src/backend-factory.ts
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// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

import { isMsWindow } from '@aws-crypto/ie11-detection'
import {
supportsWebCrypto,
supportsSubtleCrypto,
supportsZeroByteGCM,
} from '@aws-crypto/supports-web-crypto'
import { generateSynchronousRandomValues } from './synchronous_random_values'
import promisifyMsSubtleCrypto from './promisify-ms-crypto'

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'promisifyMsSubtleCrypto' is declared but its value is never read.

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Cannot find module './promisify-ms-crypto' or its corresponding type declarations.

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'promisifyMsSubtleCrypto' is declared but its value is never read.

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Cannot find module './promisify-ms-crypto' or its corresponding type declarations.

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'promisifyMsSubtleCrypto' is declared but its value is never read.

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type MaybeSubtleCrypto = SubtleCrypto | false
export type WebCryptoBackend =
Expand Down Expand Up @@ -140,7 +139,6 @@
// if needed webkitSubtle check should be added here
// see: https://webkit.org/blog/7790/update-on-web-cryptography/
if (supportsWebCrypto(window)) return window.crypto.subtle
if (isMsWindow(window)) return promisifyMsSubtleCrypto(window.msCrypto.subtle)
return false
}

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38 changes: 0 additions & 38 deletions modules/web-crypto-backend/src/promisify-ms-crypto.ts
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5 changes: 0 additions & 5 deletions modules/web-crypto-backend/src/synchronous_random_values.ts
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// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

import { isMsWindow } from '@aws-crypto/ie11-detection'
import { supportsSecureRandom } from '@aws-crypto/supports-web-crypto'
import { locateWindow } from '@aws-sdk/util-locate-window'

Expand All @@ -19,10 +18,6 @@ export function generateSynchronousRandomValues(
return function synchronousRandomValues(byteLength: number): Uint8Array {
if (supportsSecureRandom(globalScope)) {
return globalScope.crypto.getRandomValues(new Uint8Array(byteLength))
} else if (isMsWindow(globalScope)) {
const values = new Uint8Array(byteLength)
globalScope.msCrypto.getRandomValues(values)
return values
}

throw new Error(`Unable to locate a secure random source.`)
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12 changes: 0 additions & 12 deletions package-lock.json
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