fix semantics of first nil; tag 0.5.13

.github/workflows/test.yaml

@@ -17,6 +17,8 @@ jobs:
         with:
           toolchain: stable
 
+      - uses: Swatinem/rust-cache@v1
+
       - run: cargo test
       - run: cargo run --bin cr calcit/editor/compact.cirru --once
       - run: cargo run --bin cr calcit/test.cirru --once

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "calcit_runner"
-version = "0.5.12"
+version = "0.5.13"
 authors = ["jiyinyiyong <jiyinyiyong@gmail.com>"]
 edition = "2018"
 license = "MIT"

calcit/test-list.cirru

@@ -20,6 +20,8 @@
               assert= (conj a 4 5 6 7) $ [] 1 2 3 4 5 6 7
               assert= 1 (first a)
               assert= 3 (last a)
+              assert= nil (first nil)
+              assert= nil (last nil)
               assert-detect nil? (first $ [])
               assert-detect nil? (last $ [])
               assert= (rest a) $ [] 2 3

package.json

@@ -1,11 +1,11 @@
 {
   "name": "@calcit/procs",
-  "version": "0.5.12",
+  "version": "0.5.13",
   "main": "./lib/calcit.procs.js",
   "devDependencies": {
-    "@types/node": "^16.11.6",
-    "esbuild": "^0.13.12",
-    "typescript": "^4.4.4"
+    "@types/node": "^16.11.11",
+    "esbuild": "^0.14.2",
+    "typescript": "^4.5.2"
   },
   "scripts": {
     "compile": "rm -rfv lib/* && tsc",

ts-src/calcit.procs.ts

@@ -1,5 +1,5 @@
 // CALCIT VERSION
-export const calcit_version = "0.5.12";
+export const calcit_version = "0.5.13";
 
 import { overwriteComparator, initTernaryTreeMap } from "@calcit/ternary-tree";
 import { parse, ICirruNode } from "@cirru/parser.ts";

ts-src/js-list.ts

@@ -38,6 +38,9 @@ export class CalcitList {
     return listLen(this.value);
   }
   get(idx: number) {
+    if (this.len() === 0) {
+      return null;
+    }
     return listGet(this.value, idx);
   }
   assoc(idx: number, v: CalcitValue) {