Lets transpile index.ts file and run our test lambda function.
$ cd $WORKSPACE/$FUNCTIONNAME
$ tsc
$ npm run sam
> function-one@1.0.0 sam /Users/oz/src/project-one/function-one
> node_modules/aws-sam-local/node_modules/.bin/sam local invoke -e src/event.json function-one
2019/09/18 18:16:23 Successfully parsed template.yaml
2019/09/18 18:16:23 Connected to Docker 1.40
2019/09/18 18:16:23 Fetching lambci/lambda:nodejs8.10 image for nodejs8.10 runtime...
nodejs8.10: Pulling from lambci/lambda
Digest: sha256:bc59e063662af0e2ad2a634e0ca23e10a31ea1db12212da80aebf2ff2d9ee323
Status: Image is up to date for lambci/lambda:nodejs8.10
2019/09/18 18:16:24 Invoking dist/index.handler (nodejs8.10)
2019/09/18 18:16:24 Mounting /Users/oz/src/project-one/function-one as /var/task:ro inside runtime container
START RequestId: 8f64aa70-8928-1bd4-8f5c-df84051ab7b3 Version: $LATEST
2019-09-18T22:16:25.501Z 8f64aa70-8928-1bd4-8f5c-df84051ab7b3 value1 = value1
2019-09-18T22:16:25.501Z 8f64aa70-8928-1bd4-8f5c-df84051ab7b3 value2 = value2
2019-09-18T22:16:25.501Z 8f64aa70-8928-1bd4-8f5c-df84051ab7b3 value3 = value3
2019-09-18T22:16:25.501Z 8f64aa70-8928-1bd4-8f5c-df84051ab7b3 DEV
END RequestId: 8f64aa70-8928-1bd4-8f5c-df84051ab7b3
REPORT RequestId: 8f64aa70-8928-1bd4-8f5c-df84051ab7b3 Duration: 8.67 ms Billed Duration: 100 ms Memory Size: 128 MB Max Memory Used: 30 MB
"{\n \"key1\": \"value1\",\n \"key2\": \"value2\",\n \"key3\": \"value3\"\n}"
With this line sam local invoke -e src/event.json function-one, we invoked function-one.ts and passed the event.json file as the event payload. SAM Local ran the lambda function in a local container using docker. We can see the max memory used, duration as we would see during a real lambda execution.
