I defined a lambda function using NodejsFunction of AWS CDK.
I installed the modules I want to use in my lambda function in node_modules of CDK.
When I execute sam local invoke, some modules succeed and others fail.
When an error occurs, the error message "File not found in '/var/task/...'" is displayed.
Does this mean that some modules can be used with NodejsFunction and some cannot?
lambda-stack.ts
new lambda.NodejsFunction(this, 'SampleFunction', {
runtime: Runtime.NODEJS_14_X,
entry: 'lambda/sample-function/index.ts'
})
lambda/sample-function/index.ts (use 'date-fns') -> succeeded!
import { format } from 'date-fns'
export const handler = async () => {
try {
console.log(format(new Date(), "'Today is a' eeee"))
} catch (error) {
console.log(error)
}
}
lambda/sample-function/index.ts (use 'chrome-aws-lambda') -> failed
const chromium = require('chrome-aws-lambda')
export const handler = async () => {
try {
const browser = await chromium.puppeteer.launch()
} catch (error) {
// Cannot find module '/var/task/puppeteer/lib/Browser'
console.log(error)
}
}
lambda/sample-function/index.ts (use 'pdfkit') -> failed
const PDFDocument = require('pdfkit')
export const handler = async () => {
try {
const doc = new PDFDocument()
} catch (error) {
// no such file or directory, open '/var/task/data/Helvetica.afm'
console.log(error)
}
}