Migrate word-count to ReScript

Author: JsonKim

exercises/practice/word-count/.meta/config.json

@@ -12,13 +12,13 @@
   ],
   "files": {
     "solution": [
-      "src/WordCount.re"
+      "src/WordCount.res"
     ],
     "test": [
-      "__tests__/WordCount_test.re"
+      "__tests__/WordCount_test.res"
     ],
     "example": [
-      ".meta/src/Example.re"
+      ".meta/src/WordCount.res"
     ]
   },
   "source": "This is a classic toy problem, but we were reminded of it by seeing it in the Go Tour."

exercises/practice/word-count/.meta/src/Example.re

@@ -0,0 +1,17 @@
+let wordCount = (input: string) =>
+  input
+  ->Js.String2.toLowerCase
+  ->Js.String2.replaceByRe(%re("/[^'a-zA-Z0-9]+/g"), " ")
+  ->Js.String2.trim
+  ->Js.String2.splitByRe(%re("/'?\\s+'?/"))
+  ->Js.Array2.map(Belt.Option.getExn)
+  ->Js.Array2.reduce((dict, word) => {
+    let count = Js.Dict.get(dict, word)
+
+    switch count {
+    | Some(value) => Js.Dict.set(dict, word, value + 1)
+    | None => Js.Dict.set(dict, word, 1)
+    }
+
+    dict
+  }, Js.Dict.empty())

exercises/practice/word-count/.meta/src/WordCount.res

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Exercism
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

exercises/practice/word-count/LICENSE

@@ -1,30 +1,17 @@
-// This is the configuration file used by BuckleScript's build system bsb. Its documentation lives here: http://bucklescript.github.io/bucklescript/docson/#build-schema.json
-// BuckleScript comes with its own parser for bsconfig.json, which is normal JSON, with the extra support of comments and trailing commas.
 {
-  "name": "word-count",
-  "version": "0.1.0",
+  "name": "@exercism/rescript-word-count",
   "sources": [
+    { "dir": "src", "subdirs": true },
+    { "dir": "tests", "subdirs": true, "type": "dev" }
+  ],
+  "package-specs": [
     {
-      "dir": "src",
-      "subdirs": true
-    },
-    {
-      "dir": "__tests__",
-      "type": "dev"
+      "module": "es6-global",
+      "in-source": true
     }
   ],
-  "package-specs": {
-    "module": "commonjs",
-    "in-source": true
-  },
-  "suffix": ".bs.js",
-  "bs-dependencies": [
-    // add your dependencies here. You'd usually install them normally through `npm install my-dependency`. If my-dependency has a bsconfig.json too, then everything will work seamlessly.
-  ],
-  "bs-dev-dependencies": ["@glennsl/bs-jest"],
-  "warnings": {
-    "error": "+101"
-  },
-  "namespace": true,
-  "refmt": 3
+  "suffix": ".mjs",
+  "bs-dev-dependencies": [
+    "rescript-test"
+  ]
 }