Implement ECMAScript native modules, remove circular references

[haraldrudell]

If aws-sdk is bundled using @rollup, this fails at runtime with an undefined variable type error

action: remove circular references
This is likely caused by the habit of using ciruclar references which has traditionally been a bad practice with @nodejs

action: Implementing ECMAScript native modules for tree shaking
Implementing ECMAScript native modules, ie. import and export statements in the source code, would allow tree shaking which is a benefit for a huge library like aws-sdk

action: transpilation
This would require transpilation for Node.js older than stable Nodejs v8.5+
-- or two separate branches

symptom

code: 'CIRCULAR_DEPENDENCY',
importer: '../../node_modules/aws-sdk/lib/util.js',
'Circular dependency: ../../node_modules/aws-sdk/lib/util.js -> ../../node_modules/aws-sdk/lib/core.js ->
../../node_modules/aws-sdk/lib/util.js'

get-around
Define aws-sdk as a RollupJS external reference. It works when node require loads it.

I am using aws-sdk with es2049package
https://github.com/haraldrudell/ECMAScript2049/tree/master/workspace/packages/es2049package

[jeskew]

Closing as a duplicate of #1769 & #1766. There's a fair amount of discussion on those issues, so I'd like to keep the conversation centralized there.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs and link to relevant comments in this thread.