[bazel] Run nodejs inside of bazel for genrules (#1948)

BUILD.bazel

@@ -1,4 +1,6 @@
+load("@aspect_rules_js//js:defs.bzl", "js_binary", "js_library", "js_run_binary")
 load("@bazel_skylib//rules:common_settings.bzl", "string_flag")
+load("@npm//:defs.bzl", "npm_link_all_packages")
 load(
     "//bazel:core.bzl",
     "MLN_CORE_HEADERS",
@@ -20,62 +22,51 @@ load(
 load("//bazel:flags.bzl", "CPP_FLAGS", "MAPLIBRE_FLAGS")
 
 # Generate code required by the core
-filegroup(
-    name = "style_data",
-    srcs = glob(["**/*.ejs"]),
-)
 
-genrule(
+js_run_binary(
     name = "generated_style_code",
-    srcs = ["style_data"],
+    srcs = glob(
+        ["**/*.ejs"],
+        allow_empty = False,
+    ),
     outs = MLN_PUBLIC_GENERATED_STYLE_HEADERS +
            MLN_PRIVATE_GENERATED_STYLE_HEADERS +
            MLN_GENERATED_STYLE_SOURCE,
-    cmd = "node $(execpath scripts/generate-style-code.js) --root $(RULEDIR)",
-    tools = ["scripts/generate-style-code.js"],
+    tool = ":generate-style-code-script",
 )
 
-filegroup(
-    name = "shader_data",
-    srcs = ["shaders/manifest.json"] + glob(["shaders/*.glsl"]),
-)
-
-genrule(
+js_run_binary(
     name = "generated_shaders",
-    srcs = ["shader_data"],
+    srcs = ["shaders/manifest.json"] + glob(
+        ["shaders/*.glsl"],
+        allow_empty = False,
+    ),
     outs = MLN_GENERATED_SHADER_HEADERS +
            MLN_GENERATED_OPENGL_SHADER_HEADERS,
-    cmd = "node $(execpath shaders/generate_shader_code.js) --root $(RULEDIR)",
-    tools = ["shaders/generate_shader_code.js"],
+    tool = ":generate-shader-code-script",
 )
 
 # This header only target strips the __generated__ prefix for the compiler
 # search paths, making the location of generated code transparent to the build
 cc_library(
     name = "mbgl-core-generated-public-artifacts",
-    srcs = [],
-    hdrs = MLN_PUBLIC_GENERATED_STYLE_HEADERS +
+    hdrs = [
+               ":generated_shaders",
+               ":generated_style_code",
+           ] + MLN_PUBLIC_GENERATED_STYLE_HEADERS +
            MLN_GENERATED_SHADER_HEADERS +
            select({
                "//:metal_renderer": [],
                "//conditions:default": MLN_GENERATED_OPENGL_SHADER_HEADERS,
            }),
     visibility = ["//visibility:public"],
-    deps = [
-        ":generated_shaders",
-        ":generated_style_code",
-    ],
 )
 
 # ditto, but for private headers (under the src/ path)
 cc_library(
     name = "mbgl-core-generated-private-artifacts",
-    srcs = [],
-    hdrs = MLN_PRIVATE_GENERATED_STYLE_HEADERS,
+    hdrs = [":generated_style_code"] + MLN_PRIVATE_GENERATED_STYLE_HEADERS,
     visibility = ["//visibility:private"],
-    deps = [
-        ":generated_style_code",
-    ],
 )
 
 # Generated source is inserted directly into the core target, no need to remove
@@ -207,3 +198,45 @@ exports_files(
     ],
     visibility = ["//visibility:public"],
 )
+
+npm_link_all_packages(
+    name = "node_modules",
+)
+
+js_binary(
+    name = "generate-style-code-script",
+    data = [
+        ":node_modules/argparse",
+        ":node_modules/csscolorparser",
+        ":style-code",
+        ":style-spec",
+    ],
+    entry_point = "scripts/generate-style-code.js",
+)
+
+js_binary(
+    name = "generate-shader-code-script",
+    data = [
+        ":node_modules/argparse",
+    ],
+    entry_point = "shaders/generate_shader_code.js",
+)
+
+js_library(
+    name = "style-spec",
+    srcs = ["scripts/style-spec.js"],
+    data = glob([
+        "scripts/style-spec-reference/*.js",
+        "scripts/style-spec-reference/*.json",
+    ]),
+    visibility = ["//visibility:public"],
+)
+
+js_library(
+    name = "style-code",
+    srcs = ["scripts/style-code.js"],
+    visibility = ["//visibility:public"],
+    deps = [
+        ":node_modules/ejs",
+    ],
+)