Minor improvements to .mjs code

Author: JosephTLyons

src/gleam_stdlib.mjs

@@ -13,7 +13,6 @@ import {
 } from "./gleam.mjs";
 import { DecodeError } from "./gleam/dynamic.mjs";
 import { Some, None } from "./gleam/option.mjs";
-import { Eq, Gt, Lt } from "./gleam/order.mjs";
 import Dict from "./dict.mjs";
 
 const Nil = undefined;
@@ -885,7 +884,7 @@ export function inspect(v) {
 function inspectString(str) {
   let new_str = '"';
   for (let i = 0; i < str.length; i++) {
-    let char = str[i];
+    const char = str[i];
     switch (char) {
       case "\n":
         new_str += "\\n";

src/gleam_stdlib_decode_ffi.mjs

@@ -40,7 +40,7 @@ export function index(data, key) {
 
 export function list(data, decode, pushPath, index, emptyList) {
   if (!(data instanceof List || Array.isArray(data))) {
-    let error = new DecodeError("List", classify(data), emptyList);
+    const error = new DecodeError("List", classify(data), emptyList);
     return [emptyList, List.fromArray([error])];
   }
 

test/gleam_stdlib_test_ffi.mjs

@@ -1,6 +1,6 @@
 export function uint8array(list) {
-  let ints = list.toArray();
-  let array = new Uint8Array(ints.length);
+  const ints = list.toArray();
+  const array = new Uint8Array(ints.length);
   for (let i = 0; i < ints.length; i++) {
     array[i] = ints[i];
   }

test/gleeunit.mjs

@@ -1,8 +1,8 @@
 // This file is a verbatim copy of gleeunit 0.10.0's <https://github.com/lpil/gleeunit/blob/main/src/gleeunit_ffi.mjs>
 
 async function* gleamFiles(directory) {
-  for (let entry of await read_dir(directory)) {
-    let path = join_path(directory, entry);
+  for (const entry of await read_dir(directory)) {
+    const path = join_path(directory, entry);
     if (path.endsWith(".gleam")) {
       yield path;
     } else {
@@ -16,9 +16,9 @@ async function* gleamFiles(directory) {
 }
 
 async function readRootPackageName() {
-  let toml = await read_file("gleam.toml", "utf-8");
-  for (let line of toml.split("\n")) {
-    let matches = line.match(/\s*name\s*=\s*"([a-z][a-z0-9_]*)"/); // Match regexp in compiler-cli/src/new.rs in validate_name()
+  const toml = await read_file("gleam.toml", "utf-8");
+  for (const line of toml.split("\n")) {
+    const matches = line.match(/\s*name\s*=\s*"([a-z][a-z0-9_]*)"/); // Match regexp in compiler-cli/src/new.rs in validate_name()
     if (matches) return matches[1];
   }
   throw new Error("Could not determine package name from gleam.toml");
@@ -28,21 +28,21 @@ export async function main() {
   let passes = 0;
   let failures = 0;
 
-  let packageName = await readRootPackageName();
-  let dist = `../${packageName}/`;
+  const packageName = await readRootPackageName();
+  const dist = `../${packageName}/`;
 
-  for await (let path of await gleamFiles("test")) {
-    let js_path = path.slice("test/".length).replace(".gleam", ".mjs");
-    let module = await import(join_path(dist, js_path));
-    for (let fnName of Object.keys(module)) {
+  for await (const path of await gleamFiles("test")) {
+    const js_path = path.slice("test/".length).replace(".gleam", ".mjs");
+    const module = await import(join_path(dist, js_path));
+    for (const fnName of Object.keys(module)) {
       if (!fnName.endsWith("_test")) continue;
       try {
         await module[fnName]();
         write(`\u001b[32m.\u001b[0m`);
         passes++;
       } catch (error) {
-        let moduleName = "\n" + js_path.slice(0, -4);
-        let line = error.line ? `:${error.line}` : "";
+        const moduleName = "\n" + js_path.slice(0, -4);
+        const line = error.line ? `:${error.line}` : "";
         write(`\n❌ ${moduleName}.${fnName}${line}: ${error}\n`);
         failures++;
       }
@@ -76,8 +76,8 @@ function exit(code) {
 
 async function read_dir(path) {
   if (globalThis.Deno) {
-    let items = [];
-    for await (let item of Deno.readDir(path, { withFileTypes: true })) {
+    const items = [];
+    for await (const item of Deno.readDir(path, { withFileTypes: true })) {
       items.push(item.name);
     }
     return items;
@@ -96,8 +96,8 @@ async function read_file(path) {
   if (globalThis.Deno) {
     return Deno.readTextFile(path);
   } else {
-    let { readFile } = await import("fs/promises");
-    let contents = await readFile(path);
+    const { readFile } = await import("fs/promises");
+    const contents = await readFile(path);
     return contents.toString();
   }
 }