Stop bundling files into a single bundle

[n1ru4l]

Instead of bundling everything into a single bundle, the original file structure within the src folder should be kept. This allows users to do deep imports.

[ardatan]

I think people should be able to configure multiple entrypoints instead of using the source directory structure.

[n1ru4l]

I agree with @ardatan on configuring custom entry points. Bob should check the following for the exports map:

1. All the exports point to existing files
2. All the exports are TypeScript module resolution compatible

In addition, the bootstrap command (I created in #55) should help people with onboarding to bob and give good defaults.

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An overview of the current build process:

Today, transpilation from ts to js is achieved by running tsc, followed by bundling and copying files via bob build.

In a monorepository the following happens:

tsc creates

• <monorepo-root>/dist/<package-name>/src/*.js (esm)
• <monorepo-root>/dist/<package-name>/src/*.d.ts (type-defs)

bob build does:

• resolves the path of the previous files
• creates a single esm and cjs bundle from the tsc emitted files at <monorepo-root>/packages/<package-name>/dist/index.(m).js
• copies the type-definitions to <monorepo-root>/packages/<package-name>/dist/**/*.d.ts
• generates a package.json at <monorepo-root>/packages/<package-name>/dist/package.json