bazel：'@bazel/typescript' 不是 package

Question

我尝试加载ts_project失败并显示以下错误消息：

ERROR: error loading package '': Label '@npm//@bazel/typescript:index.bzl' is invalid because '@bazel/typescript' is not a package; perhaps you meant to put the colon here: '@npm//:@bazel/typescript/index.bzl'?

WORKSPACE ：

workspace(
    name = "nodejs",
    managed_directories = {"@npm": ["node_modules"]},
)

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
http_archive(
    name = "build_bazel_rules_nodejs",
    sha256 = "cfc289523cf1594598215901154a6c2515e8bf3671fd708264a6f6aefe02bf39",
    urls = ["https://github.com/bazelbuild/rules_nodejs/releases/download/4.4.6/rules_nodejs-4.4.6.tar.gz"],
)

load("@build_bazel_rules_nodejs//:index.bzl", "npm_install")
npm_install(
    name = "npm",
    package_json = "//:package.json",
    package_lock_json = "//:package-lock.json",
)

BUILD ：

load("@npm//@bazel/typescript:index.bzl", "ts_project")
load("@build_bazel_rules_nodejs//:index.bzl", "nodejs_test")

ts_project(
  name = "lib",
  srcs = glob(["src/**/*.ts"]),
  tsconfig = "tsconfig.json",
  deps = [
    "@npm//@types/lodash"
  ],
  declaration = True,
  source_map = True,
)

nodejs_test(
  name = "index_test",
  entry_point = ":src/index.ts",
  data = [
    "@npm//lodash",
    ":lib"
  ],
)

怎么了？

Answer 1

假设你有一个最小的 package.json 你没有在这里展示给我们，比如说

{
    "name": "test",
    "version": "1.0.0"
}

然后，如果您检查@npm中的内容，您将看到其中没有定义任何包。

❯ bazel query @npm//...
@npm//:node_modules
Loading: 1 packages loaded

您需要将@bazel/typescript添加到 package.json 以使npm_install对您可用。 所以运行

❯ npm install @bazel/typescript

up to date, audited 25 packages in 644ms

found 0 vulnerabilities

package.json 现在有

{
    "name": "test",
    "version": "1.0.0",
    "dependencies": {
        "@bazel/typescript": "^4.4.6"
    }
}

我们的 Bazel 查询现在显示了一堆可用的包：

❯ bazel query @npm//...
@npm//tsutils:tsutils__umd
@npm//tsutils:tsutils__typings
@npm//tsutils:tsutils__all_files
[...]
@npm//@bazel/typescript:typescript__nested_node_modules
@npm//@bazel/typescript:typescript__files
Loading: 0 packages loaded

包括load语句以前没有找到的那个。 此时，您可以尝试再次构建您的 package，确保添加您需要的所有依赖项（如 lodash）。