How to include external javascript libraries in clojurescript

Question

We are trying to introduce clojurescript in a project which is currently written in angularjs. We are using an external javascript library - datamaps. We are using the :foreign-libs compiler option to get the dependency file in the following manner :

 :compiler {:output-to "resources/public/js/testable.js"                                                                       
                              :main "gofigure.test-runner"                                                                                       
                              :foreign-libs [{:file "globe.js"                                                                                   
                                              :provides ["globe"]}                                                                               
                                             {:file "datamaps/src/js/datamaps.js"                                                                
                                              :provides ["datamaps"]}                                                                            
                                             {:file "d3/d3.js"                                                                                   
                                              :provides ["d3"]}                                                                                  
                                             {:file "topojson/topojson.js"                                                                       
                                              :provides ["topojson"]}}}

We are facing an error that says : "Cannot read property 'world' of undefined"

We narrowed this issue down to an issue in the datamaps file and we think this is because in the foreign-libs option we are mentioning the specific datamaps.js file, but we are missing out the other files in the datamaps folder, and hence not compiling the entire library accurately.

Is there any way to include the entire library as a dependency and not just a single file?

like adding the whole folder at one go? Or getting the dependencies to download for you? — Mrinal Saurabh
– Mrinal Saurabh, Commented Mar 14, 2017 at 12:01
@Mrinal We have a bower file which will download the dependencies such that they are available in the file structure but we are not able to access these files through our clojurescript code. — Kusum Ijari
– Kusum Ijari, Commented Mar 14, 2017 at 12:10
Most popular JS libraries are available on cljsjs.github.io. The benefit of using those libraries is that they are loaded when you require them in the ns declaration. Also they are provided with externs, so advanced compilation works. It might be worth the effort contributing this library, so this problem is solved for everyone. — Michiel Borkent
– Michiel Borkent, Commented Mar 14, 2017 at 21:52

TAB · Accepted Answer · 2019-04-07 05:20:53Z

1

Shadow-cljs could resolve this issue.

Shadow-cljs solves these probems reliably, optimally, and with minimal configuration. In paricular, shadow-cljs lets you install npm modules using npm or yarn and uses the resulting package.json to bundle external dependencies.

For further details https://gist.github.com/jmlsf/f41b46c43a31224f46a41b361356f04d

answered Apr 7, 2019 at 5:20

TAB

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