https://github.com/blacha/tsbuildinfo

Debug long build times using tsconfig.tsbuildinfo
https://github.com/blacha/tsbuildinfo

Last synced: about 18 hours ago
JSON representation

Debug long build times using tsconfig.tsbuildinfo

• Host: GitHub
• URL: https://github.com/blacha/tsbuildinfo
• Owner: blacha
• Created: 2020-10-30T22:36:30.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2023-01-10T17:07:00.000Z (about 2 years ago)
• Last Synced: 2024-08-09T12:48:49.243Z (5 months ago)
• Language: TypeScript
• Homepage:
• Size: 117 KB
• Stars: 14
• Watchers: 2
• Forks: 0
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md

Awesome Lists containing this project

README

        
# tsbuildinfo

Tool to debug slow build times by looking for large type definitions that may have been erroneously imported.

In some typescript projects AWS-SDK has been a very large source of typescript compile slowdowns.

by switching form a base import to directly importing the s3 client the build times for one package went from 6 seconds down to 2 seconds.

```typescript

// Bad

import * as AWS from 'aws-sdk';

// Good

import s3 from 'aws-sdk/clients/s3';

```

## Usage

```

tsbuildinfo 

```

### Example

Here is a repository that has a base import `import * as AWS from 'aws-sdk'`

```

tsbuildinfo ~/basemaps/packages/linzjs-s3fs/tsconfig.tsbuildinfo

Processing /home/blacha/workspace/basemaps/packages/linzjs-s3fs/tsconfig.tsbuildinfo

Largest Imported Modules: 

23.73 MB   aws-sdk

1.13 MB    typescript

684.81 KB  @types/node

81.97 KB   @types/sinon

71.46 KB   @types/aws-lambda

Import Paths:

         ./src/__tests__/file.s3.test.ts => aws-sdk

         ./src/file.s3.ts => aws-sdk

         ./src/index.ts => aws-sdk

         ./src/file.local.ts => @types/node

         ./src/file.s3.ts => @types/node

         ./src/file.ts => @types/node

         ./src/index.ts => @types/node

         ./src/__tests__/file.s3.test.ts => @types/sinon

```

After switching to `import s3 from 'aws-sdk/clients/s3';`

```

Processing /home/blacha/workspace/basemaps/packages/linzjs-s3fs/tsconfig.tsbuildinfo

Largest Imported Modules: 

1.13 MB    typescript

684.81 KB  @types/node

581.09 KB  aws-sdk

81.97 KB   @types/sinon

71.46 KB   @types/aws-lambda

Import Paths:

         ./src/file.local.ts => @types/node

         ./src/file.s3.ts => @types/node

         ./src/file.ts => @types/node

         ./src/index.ts => @types/node

         ./src/__tests__/file.s3.test.ts => aws-sdk

         ./src/file.s3.ts => aws-sdk

         ./src/index.ts => aws-sdk

         ./src/__tests__/file.s3.test.ts => @types/sinon

```