`mapKeys()` function and missing `soy/map.js`

[Paul Cody Johnston]

Attempting to do {for $k in mapKeys($pkg.ruleMap) } where ruleMap is a proto map-field like map<string,Rule>.

Observing:

ERROR - Namespace not provided by any srcs or direct deps of //app/soy:workspace.
goog.require('soy.map');
             ^
  ProTip: "CR_NOT_PROVIDED" or "strictDependencies" can be added to the `suppress` attribute of:
  //app/soy:workspace

1 error(s), 0 warning(s)

Perhaps there is a closure library soy/map.js that has not been open-sourced? Where can one find this file?

[Yannic]

Looking at the error message, I assume this happened while using rules_closure, right?
If so, this is something we would need to fix there. soy.map is defined in <closure-templates>/javascript/soyutils_map.js, which is not included in the dependencies of closure_js_template.

[Paul Cody Johnston]

Yes, rules_closure. Thanks for the info, that should fix it!

[Paul Cody Johnston]

Leaving an additional note to self. Not sure this is the easiest way, but it compiles:

# WORKSPACE

load("@io_bazel_rules_closure//closure:defs.bzl", "closure_repositories")

closure_repositories(
    omit_com_google_protobuf = True,
    omit_com_google_template_soy_jssrc = True,
)

http_archive(
    name = "com_google_template_soy_jssrc",
    sha256 = "c2c744f70be575f2bb614956e300786a9e3bb53bd46f3ae3ce212ac3cfa9d0b1",
    strip_prefix = "closure-templates-63f34802b543dadb72a078b006a0e7e4dbc71d7e/javascript",
    urls = ["https://github.com/google/closure-templates/archive/63f34802b543dadb72a078b006a0e7e4dbc71d7e.tar.gz"],
    build_file_content = """
package(default_visibility = ["//visibility:public"])

licenses(["notice"])  # Apache 2.0

filegroup(
    name = "com_google_template_soy_jssrc",
    srcs = [
        "jspbconversions.js",
        "soydata_converters.js",
        "soyutils_usegoog.js",
        "soyutils_map.js",
        "soyutils_newmaps.js",
    ],
)
""",
)