Frontend: use custom conditions for development and build (#111685)

* build(frontend): enable custom condition for resolving source files during dev and build

* feat(packages): apply conditional name to export properties

* chore(packages): add standard exports to flamegraph and prometheus

* chore(packages): resolve main, module, types to built files

* build(packages): clean up prepare-npm-package for custom condition changes

* refactor(packages): reduce repetition in conditional exports

* build(storybook): add @grafana-app/source to conditionNames

* test(frontend): add grafana-app/source customCondition for jest tests

* refactor(frontend): remove nested package import paths

* chore(jest): use customExportConditions for source files and browser

* chore(i18n): use src for ./eslint-plugin export

* chore(packages): set packages tsconfigs to moduleResolution bundler

* chore(packages): fix rollup builds

* build(packages): build cjs as multiple files

* chore(sql): reference MonitoringLogger for moduleresolution bundler to pass typecheck

* chore(ui): add type refs for moduleresolution bundler to pass typecheck

* feat(schema): add exports for cleaner import paths

* refactor(frontend): clean up schema paths to point to exports instead of nested file paths

* build(storybook): hack the builder-manager for custom conditions to resolve

* build(decoupled-plugins): fix broken builds due to missing conditionNames

* chore(e2e): pass condition to playwright to resolve local packages

* build(frontend): fix failing build

* chore(select): fix typings

* style(frontend): clean up eslint suppressions

* chore(packages): fix type errors due to incorrect tsconfig settings

* build(generate-apis): use swc with ts-node and moduleResolution bundler

* chore(cypress): add conditionNames to resolve monorepo packages

* build(npm): update prepare to work with latest exports changes

* build(packages): fix prepare-npm-package script

* fix(e2e-selectors): update debugoverlay for data-testid change

* build(packages): stop editing package.json at pack n publish time

* rerun ci

* chore(api-clients): use moduleResolution: bundler for customConditions support

* chore(api-clients): fix generation

* build(packages): remove aliasing exports, remove exports with only customConditions

* Revert "refactor(frontend): clean up schema paths to point to exports instead of nested file paths"

This reverts commit 7949b6ea0e60e51989d2a8149b7a24647cd68916.

* revert(schema): remove exports from package so builds work

* build(api-clients): fix up api-clients exports and rollup config

* build(api-clients): Update generated package exports for api clients

* build(schema): add overrides to cjsOutput and esmOutput so built directory structure is correct

* fix(packages): use rootDirs to prevent types/src directories in built d.ts file paths

* build(packages): prevent empty exports added to package.json during pack

* docs(packages): update readme with custom conditions information

---------

Co-authored-by: Tom Ratcliffe <tom.ratcliffe@grafana.com>

scripts/webpack/webpack.common.js

@@ -22,6 +22,7 @@ module.exports = {
     publicPath: 'public/build/',
   },
   resolve: {
+    conditionNames: ['@grafana-app/source', '...'],
     extensions: ['.ts', '.tsx', '.es6', '.js', '.json', '.svg'],
     alias: {
       // some of data source plugins use global Prism object to add the language definition