chore(NA): moving @elastic/datemath to babel transpiler (#106860) (#106921)

* chore(NA): first custom rules for jsts_transpiler

* chore(NA): update jsts_transpiler macro

* chore(NA): moving @elastic/datemath to babel transpiler

* chore(NA): change gitignore rules for bazel

Co-authored-by: Tiago Costa <tiagoffcc@hotmail.com>

.gitignore

@@ -82,6 +82,6 @@ report.asciidoc
 .yarn-local-mirror
 
 # Bazel
-bazel
-bazel-*
+/bazel
+/bazel-*
 .bazelrc.user

packages/elastic-datemath/.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["@kbn/babel-preset/node_preset"]
+}

packages/elastic-datemath/BUILD.bazel

@@ -1,5 +1,6 @@
 load("@npm//@bazel/typescript:index.bzl", "ts_config", "ts_project")
 load("@build_bazel_rules_nodejs//:index.bzl", "js_library", "pkg_npm")
+load("//src/dev/bazel:index.bzl", "jsts_transpiler")
 
 PKG_BASE_NAME = "elastic-datemath"
 PKG_REQUIRE_NAME = "@elastic/datemath"
@@ -20,15 +21,18 @@ NPM_MODULE_EXTRA_FILES = [
   "README.md",
 ]
 
-SRC_DEPS = [
-  "@npm//moment",
-]
-
 TYPES_DEPS = [
+  "@npm//moment",
   "@npm//@types/node",
 ]
 
-DEPS = SRC_DEPS + TYPES_DEPS
+DEPS = TYPES_DEPS
+
+jsts_transpiler(
+  name = "target_node",
+  srcs = SRCS,
+  build_pkg_name = package_name(),
+)
 
 ts_config(
   name = "tsconfig",
@@ -39,14 +43,15 @@ ts_config(
 )
 
 ts_project(
-  name = "tsc",
+  name = "tsc_types",
   args = ['--pretty'],
   srcs = SRCS,
   deps = DEPS,
   declaration = True,
   declaration_map = True,
-  incremental = True,
-  out_dir = "target",
+  emit_declaration_only = True,
+  incremental = False,
+  out_dir = "target_types",
   source_map = True,
   root_dir = "src",
   tsconfig = ":tsconfig",
@@ -55,7 +60,7 @@ ts_project(
 js_library(
   name = PKG_BASE_NAME,
   srcs = NPM_MODULE_EXTRA_FILES,
-  deps = DEPS + [":tsc"],
+  deps = DEPS + [":target_node", ":tsc_types"],
   package_name = PKG_REQUIRE_NAME,
   visibility = ["//visibility:public"],
 )

packages/elastic-datemath/package.json

@@ -3,8 +3,8 @@
   "version": "5.0.3",
   "description": "elasticsearch datemath parser, used in kibana",
   "license": "Apache-2.0",
-  "main": "./target/index.js",
-  "types": "./target/index.d.ts",
+  "main": "./target_node/index.js",
+  "types": "./target_types/index.d.ts",
   "peerDependencies": {
     "moment": "^2.24.0"
   }

packages/elastic-datemath/tsconfig.json

@@ -3,8 +3,9 @@
   "compilerOptions": {
     "declaration": true,
     "declarationMap": true,
-    "incremental": true,
-    "outDir": "target",
+    "emitDeclarationOnly": true,
+    "incremental": false,
+    "outDir": "target_types",
     "rootDir": "src",
     "sourceMap": true,
     "sourceRoot": "../../../../packages/elastic-datemath/src",

src/dev/bazel/BUILD.bazel

@@ -0,0 +1 @@
+package(default_visibility = ["//visibility:public"])

src/dev/bazel/index.bzl

@@ -0,0 +1,15 @@
+#
+# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+# or more contributor license agreements. Licensed under the Elastic License
+# 2.0 and the Server Side Public License, v 1; you may not use this file except
+# in compliance with, at your election, the Elastic License 2.0 or the Server
+# Side Public License, v 1.
+#
+
+"""Public API interface for Bazel custom rules.
+Please do not import from any other files when looking to use a custom rule
+"""
+
+load("//src/dev/bazel:jsts_transpiler.bzl", _jsts_transpiler = "jsts_transpiler")
+
+jsts_transpiler = _jsts_transpiler

src/dev/bazel/jsts_transpiler.bzl

@@ -0,0 +1,36 @@
+"Simple wrapper over @babel/cli so we can quickly re-use the same configurations over packages"
+
+load("@npm//@babel/cli:index.bzl", _babel = "babel")
+
+def jsts_transpiler(name, srcs, build_pkg_name, root_input_dir = "src", config_file = ".babelrc", additional_args = ["--quiet"], **kwargs):
+  """A macro around the autogenerated babel rule.
+
+  Args:
+    name: target name
+    srcs: list of sources
+    root_input_dir: defines the root input dir to transpile files from, defaults to "src"
+    config_file: transpiler config file, it defaults to a package local .babelrc
+    additional_args: Any additional extra arguments, defaults to --quiet
+    **kwargs: the rest
+  """
+  args = [
+    "./%s/%s" % (build_pkg_name, root_input_dir),
+    "--config-file",
+    "./%s/%s" % (build_pkg_name, config_file),
+    "--out-dir",
+    "$(@D)",
+    "--extensions",
+    ".ts,.tsx,.js",
+  ] + additional_args
+
+  data = [config_file] + srcs + [
+    "//packages/kbn-babel-preset",
+  ]
+
+  _babel(
+    name = name,
+    data = data,
+    output_dir = True,
+    args = args,
+    **kwargs
+  )