Cleanup

Author: dy

justin.min.js

@@ -1,11 +1,10 @@
 import { err } from "./parse.js"
 
 // build optimized evaluator for the tree
-export const compile = (node) => !Array.isArray(node) ? compile.id(node) : !node[0] ? () => node[1] : operators[node[0]](...node.slice(1)),
+export const compile = (node) => !Array.isArray(node) ? compile.id(node) : !node[0] ? () => node[1] : operators[node[0]].call(...node),
   // compile id getter
   id = compile.id = name => ctx => ctx?.[name],
 
-
   // registered operators
   operators = {},
 

src/compile.js

@@ -6,12 +6,13 @@ export let idx, cur,
   // no handling tagged literals since easily done on user side with cache, if needed
   parse = s => (idx = 0, cur = s, s = expr(), cur[idx] ? err() : s || ''),
 
+  // display error
   err = (msg = 'Bad syntax',
     lines = cur.slice(0, idx).split('\n'),
     last = lines.pop()
   ) => {
-    let before = cur.slice(idx - 108, idx).split('\n').pop()
-    let after = cur.slice(idx, idx + 108).split('\n').shift()
+    const before = cur.slice(idx - 108, idx).split('\n').pop()
+    const after = cur.slice(idx, idx + 108).split('\n').shift()
     throw EvalError(`${msg} at ${lines.length}:${last.length} \`${idx >= 108 ? '…' : ''}${before}┃${after}\``, 'font-weight: bold')
   },