Make full spread support

feature/array.js

@@ -5,7 +5,7 @@ import { PREC_TOKEN } from '../src/const.js'
 // [a,b,c]
 group('[]', PREC_TOKEN)
 operator('[]', (a, b) => (
-  !a ? () => [] : // []
-    a[0] === ',' ? (a = a.slice(1).map(compile), ctx => a.map(a => a(ctx))) : // [a,b,c]
-      (a = compile(a), ctx => [a(ctx)]) // [a]
-))
+  a = !a ? [] : a[0] === ',' ? a.slice(1) : [a],
+  a = a.map(a => a[0] === '...' ? (a = compile(a[1]), ctx => a(ctx)) : (a = compile(a), ctx => [a(ctx)])),
+  ctx => a.flatMap(a => (a(ctx))))
+)

feature/spread.js

@@ -3,4 +3,4 @@ import { PREC_PREFIX } from "../src/const.js"
 import { operator, compile } from "../src/compile.js"
 
 unary('...', PREC_PREFIX)
-operator('...', a => (a = compile(a), ctx => Object.entries(a(ctx))))
+operator('...', (a) => (a = compile(a), ctx => Object.entries(a(ctx))))

justin.js

@@ -1,5 +1,5 @@
 // no-keywords js, just in https://github.com/endojs/Jessie/issues/66
-import { err, token, binary } from './src/parse.js'
+import { err, token, binary, unary } from './src/parse.js'
 import compile, { operator, prop } from './src/compile.js'
 
 import subscript from './subscript.js'
@@ -11,6 +11,7 @@ import './feature/array.js'
 import './feature/object.js'
 import './feature/arrow.js'
 import './feature/optional.js'
+import './feature/spread.js'
 import { PREC_ASSIGN, PREC_EQ, PREC_LOR, PREC_COMP } from './src/const.js'
 
 binary('in', PREC_COMP), operator('in', (a, b) => b && (a = compile(a), b = compile(b), ctx => a(ctx) in b(ctx)))

test/perf.js

@@ -411,7 +411,7 @@ test.skip('subscript v5', async t => {
 })
 
 
-test.skip('new Function', async t => {
+test('new Function', async t => {
   console.time('new Function')
   for (let n = 0; n < RUNS; n++) {
     let fn = new Function('a', 'b', 'c', 'd', 'f', 'i', 'k', 'return ' + src(n))

test/subscript.js

@@ -341,7 +341,7 @@ test.skip('ext: in operator', async t => {
   throws(() => subscript('b inc'))
 })
 
-test('ext: list', async t => {
+test('array', async t => {
   await import('../feature/array.js')
 
   is(subscript('[]')(), [])
@@ -358,6 +358,8 @@ test('ext: list', async t => {
   is(subscript('[]')(), [])
   is(subscript('[ ]')(), [])
 
+  is(subscript('[ 1, ...x ]')({ x: [2, 3] }), [1, 2, 3])
+
   // TODO: prefix/postfix maybe?
   // is(subscript('[1,]')({}),[1])
   // is(subscript('[,]')({}),[undefined])
@@ -393,7 +395,7 @@ test.skip('ext: ternary', t => {
   sameAsJs('a? b?c:d :e', { a: 0, c: 0, d: 1, e: 2 })
 })
 
-test.only('object', async t => {
+test('object', async t => {
   await import('../feature/object.js')
   await import('../feature/ternary.js')