The prebuilt sharp node module for AWS Lambda layer.
- Built and tested automatically using GitHub Actions
- Automatically releases sharp updates with GitHub Actions
- Separated builds for
arm64andx64 - Minified and bundled with
esbuild - Minimum
6.98 MBzip file to optimize cold start time
Please check out Optimizing Node.js dependencies in AWS Lambda for details. A bundled and minified lambda function can be up to 70% faster for cold starts. The package size is also crucial for cold start performance.
Download latest release-arm64.zip or release-x64.zip
import sharp from 'sharp'Check out aws: Creating and sharing Lambda layers for more details.
This package can be used with sst. Check out docs.sst.dev: Lambda Layers and sst.dev: Resize Images for examples.
function: {
handler: '{handler}',
runtime: 'nodejs18.x',
architecture: 'arm_64',
nodejs: {
esbuild: {
external: ['sharp'],
},
},
layers: [
new lambda.LayerVersion(stack, 'SharpLayer', {
code: lambda.Code.fromAsset('layers/sharp'),
compatibleArchitectures: [
lambda.Architecture.ARM_64
]
}),
]
}Providing a zip file locally actually works, even though it's not mentioned in the documentation.
## Lambda
ImageFunction:
Type: AWS::Serverless::Function
Properties:
CodeUri: image-lambda/
Handler: app.handler
Runtime: nodejs18.x
Architectures:
- arm64
Timeout: 30
MemorySize: 1024
Layers:
- !Ref SharpLayer
Metadata:
BuildMethod: esbuild
BuildProperties:
# Check these two issues for problems related to esm and esbuild
# https://github.com/evanw/esbuild/issues/1921
# https://github.com/evanw/esbuild/pull/2067#issuecomment-1503688128
# Switch to cjs when esm doesn't work
Format: esm
OutExtension:
- .js=.mjs
EntryPoints:
- app.ts
External:
- '@aws-sdk/*' # @aws-sdk 3.x is installed globally for nodejs18.x
- sharp # use layer
## Lambda layer
SharpLayer:
Type: AWS::Serverless::LayerVersion
Properties:
LayerName: sharp
ContentUri: layers/sharp/release-arm64.zip # zip
CompatibleArchitectures:
- arm64
CompatibleRuntimes:
- nodejs18.x
- nodejs16.xFork this repo -> Actions -> Run build.yml
Umkus/lambda-layer-sharp - another maintained sharp lambda layer
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