Affects: 1.9.1033+
I have a minimal repro repo here:
https://github.com/au-phiware/cljs-2818
h2. Description of problem
Prior to the update to Closure compiler in CLJS-2389, ES6 modules that used the {{export { x as y } from './x'}} or {{export { default as y } from './x'}} syntax compiled correctly. Other forms of this syntax, such as {{export { default } from './x'}}, did not.
Since 1.9.1033, the compiler no longer emits the {{goog.require}} statements nor does it emit a complete set of {{goog.addDependency}} statements in {{cljs_deps.js}}.
h2. Steps to reproduce the problem
Consider the following source files:
{code:title=src/foo/core.cljs|language=clojure}
(ns foo.core (:require [hello :refer [helloGreet]]))
(def ^:export sayHello
(helloGreet "World"))
(sayHello)
{code:title=es6/hello.js|language=javascript}
export {
default as helloGreet
} from "./greet";
{code:title=es6/greet.js|language=javascript}
export default function greet(m) {
document.write("\nHello, " + m);
};
{code:title=build.clj|language=clojure}
(require 'cljs.build.api)
(cljs.build.api/build
"src"
{:main 'foo.core
:output-to "target/main.js"
:output-dir "target/main.out"
:asset-path "main.out"
:foreign-libs [{:file "es6/hello.js"
:provides ['hello]
:module-type :es6}]
:verbose true
:npm-deps {"@cljs-oss/module-deps" "*"}
:install-deps true})
Execute {{cljs}}:
java -cp cljs.jar:src clojure.main build.clj
h2. Expected outcome
{{cljs}} should exit cleanly and write the following files (approximately).
{code:title=target/main.out/cljs_deps.js|language=javascript}
goog.addDependency("base.js", ['goog'], []);
goog.addDependency("../cljs/core.js", ['cljs.core'], ['goog.string', 'goog.Uri', 'goog.object', 'goog.math.Integer', 'goog.string.StringBuffer', 'goog.array', 'goog.math.Long']);
goog.addDependency("../process/env.js", ['process.env'], ['cljs.core']);
goog.addDependency("../es6/greet.js", ['module$usr$src$es6$greet'], []);
goog.addDependency("../es6/hello.js", ['module$usr$src$es6$hello'], ['module$usr$src$es6$greet']);
goog.addDependency("../foo/core.js", ['foo.core'], ['cljs.core', 'module$usr$src$es6$hello']);
{code:title=target/main.out/es6/hello.js|language=javascript}
goog.provide("module$usr$src$es6$hello");
goog.require("module$usr$src$es6$greet");
module$usr$src$es6$hello.helloGreet=module$usr$src$es6$greet["default"]
h2. Actual outcome
The {{cljs_deps.js}} is missing the {{es6/greet.js}} dependency:
{code:title=target/main.out/cljs_deps.js|language=javascript}
goog.addDependency("base.js", ['goog'], []);
goog.addDependency("../cljs/core.js", ['cljs.core'], ['goog.string', 'goog.Uri', 'goog.object', 'goog.math.Integer', 'goog.string.StringBuffer', 'goog.array', 'goog.math.Long']);
goog.addDependency("../process/env.js", ['process.env'], ['cljs.core']);
goog.addDependency("../es6/hello.js", ['module$usr$src$es6$hello'], []);
goog.addDependency("../foo/core.js", ['foo.core'], ['cljs.core', 'module$usr$src$es6$hello']);
And the {{es6/hello.js}} file is missing the {{goog.requires}} statement:
{code:title=target/main.out/es6/hello.js|language=javascript}
goog.provide("module$usr$src$es6$hello");
var module$usr$src$es6$hello={get helloGreet(){return module$usr$src$es6$greet["default"]}}
Furthermore, the browser console shows:
>>> module$usr$src$es6$hello.helloGreet
hello.js:2 Uncaught ReferenceError: module$usr$src$es6$greet is not defined
at Object.get helloGreet [as helloGreet] (hello.js:2)
at <anonymous>:1:65
h2. Attempted workaround
Explicitly adding the {{:requires}} option to {{es6/hello.js}} {{:foreign-libs}} entry did not remedy the problem (nor did using an entry for the whole {{es6}} directory or using an npm module, e.g. d3-scale). Neither did adding {{[greet]}} to {{foo.core}}'s requires.
