feat(core): add option to suppress indentation in templates

[jesterhazy]

Fixes #18694, #8712

This change adds an option to suppress indentation in CloudFormation template files. Suppressing indentation will reduce the file size of templates.

Indentation can be set by enabling for specific Stacks using the new suppressTemplateIndentation property in StackProps, or globally using the new @aws-cdk/core:suppressTemplateIndentation context key.

This PR provides additional template size reduction beyond the indentation change in #19656.

@rix0rrr @mackalex @PatMyron

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[gitpod-io]

[jesterhazy]

note: integration tests have NOT been run

[aws-cdk-automation]

The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

A comment requesting an exemption should contain the text Exemption Request. Additionally, if clarification is needed add Clarification Request to a comment.

[jesterhazy]

Exemption Request: this change doesn't seem to warrant an integration test.

[jesterhazy]

Clarification Request: which readme file would you expect to be updated for this?

[corymhall]

@jesterhazy thanks for taking the time to create this PR! Looking at the pasted issues on this I think we should try to solve this differently. I want to solve this 1 time, what is the absolute best we can do in regards to template size and how can we do it automatically.

We can either use the linked issue to discuss the potential solutions or you can create a new issue to discuss, I'll leave it up to you.

[corymhall]

@jesterhazy actually after looking into this more I think you are on the right track. It looks like this is the best that we can do (for some reason I was thinking there was still something more we could do).

I only have 2 minor comments and then I'm good with this.

[jesterhazy]

@corymhall what needs to happen to move this forward?

[corymhall]

Can you also add a simple integration test (or update an existing one) that sets the suppressTemplateIndentations: true. I just want to have a test that actually deploys a template without indentation.

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

Pull request has been modified.

[jesterhazy]

several of the tests in aws-lambda-nodejs/test/function.test.js are failing due to missing package lock files. I don't see this error when i run the unit tests locally, and this test doesn't seem at all related to this change. is something off in your CodeBuild environment?

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: bdd1a5c
• Result: SUCCEEDED
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[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).