Unfortunately, this conversion triggered an error due to one of the
shortcomings of the Babel implementation of TypeScript:
SyntaxError: /tools/tool-env/profile.ts: Namespace not marked type-only declare. Non-declarative namespaces are only supported experimentally in Babel. To enable and review caveats see: https://babeljs.io/docs/en/babel-plugin-transform-typescript
278 | }
279 |
> 280 | export namespace Profile {
| ^
281 | export let enabled = !! process.env.METEOR_PROFILE;
282 |
283 | export function time<TResult>(bucket: string, f: () => TResult) {
at File.buildCodeFrameError (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/core/lib/transformation/file/file.js:261:12)
at transpileNamespace (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/plugin-transform-typescript/lib/namespace.js:25:25)
at PluginPass.TSModuleDeclaration (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/plugin-transform-typescript/lib/index.js:271:32)
at newFn (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/visitors.js:193:21)
at NodePath._call (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/path/context.js:53:20)
at NodePath.call (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/path/context.js:40:17)
at NodePath.visit (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/path/context.js:88:12)
at TraversalContext.visitQueue (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/context.js:118:16)
at TraversalContext.visitMultiple (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/context.js:85:17)
at TraversalContext.visit (/Users/ben/meteor/dev_bundle/lib/node_modules/@babel/traverse/lib/context.js:144:19)
When we call readAndWatchFileWithHash, if the file does not exist, we
still want to add it to the watchSet with a null hash. Later, however, we
have to be careful we do not assume every file in watchSet.files exists.
It's very useful to be able to include code only in production. It's
useful for React integration, but presumably also for many apps.
* Add prodOnly boolean flag alongside debugOnly in Package.describe
* Packages the set prodOnly to true auto-depend on isobuild:prod-only
(making them error in the old tool where prodOnly isn't supported)
* The `includeDebug` boolean build option is replaced by a string
named buildMode, which can be 'development' or 'production', just
like minifyMode.
Tested by self-test.
