Template String Support?

[jaidetree]

Template String Support?

[borkdude]

I have read the post, but I don't understand some parts.

(js-template-str "git add " some-var)

Isn't js-template-str just the str function here?

What about using goog.string.format which is available in nbb?

[jaidetree]

goog.string.format works for problems where I'm just trying to format a string. But in the case of libraries like zx, goog string format would not work. Same with using the sql function from packages like slonik.

In js land:

import $ from 'zx'

$`ls -a ${path.join(process.cwd(), 'nbb.edn')}` 

Will call the $ function like:

$(['ls -a '], '/Users/j/projects/cljs-piano/nbb.edn')

Where each str is included in that first array of strings, then each interpolation value is provided as a function arg.

https://github.com/google/zx/blob/4999435182fe1f34f6b2ef2471184d9878456b5e/src/core.ts#L93

So that macro could be used like this:

(require '['zx' :refer [$]]
         '['path' :as path])

(apply $ (js-template-str "ls -a" (.join path (js/process.cwd) "nbb.edn")))

Took a stab at a first draft:

(defmacro js-template-str
  [& args]
  (let [[strs# args#] (partition-by string? args)
        result# (cons (clj->js (conj (vec strs#) "")) args#)]
    `(list ~@result#)))

(comment
  (macroexpand-1
    '(js-template-str "iconutil -c icns " (.join path (js/process.cwd) "nbb.edn"))))

;; => (#js ["iconutil -c icns "] (.join path (js/process.cwd) "nbb.edn"))

[borkdude]

I've had a discussion about template string support here:

squint-cljs/squint#40

There was also a string interpolation << macro in incubator:

https://clojure.github.io/clojure-contrib/strint-api.html

The output of your macro seems pretty specific to what zx expects or are there more general use cases?