diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..3e3e1df
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,7 @@
+version: 2
+updates:
+
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly
diff --git a/.github/workflows/deno-ci.yml b/.github/workflows/deno-ci.yml
index 95f79aa..957fa8f 100644
--- a/.github/workflows/deno-ci.yml
+++ b/.github/workflows/deno-ci.yml
@@ -5,6 +5,9 @@ on:
     branches: [ main ]
   pull_request: {}
 
+permissions:
+  contents: read
+
 jobs:
 
   check:
@@ -13,20 +16,76 @@ jobs:
     strategy:
       matrix:
         deno-version:
-        - v1.18
-        - v1.20
-        - v1.22
+        - v1.40
+        - v2.0
+        - v2.1
+        - v2.2
+        - v2.3
+        - v2.4
+        - v2.5
         - canary
       fail-fast: false # run each branch to completion
 
     steps:
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v5
+
+    - name: Cache Deno deps
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/deno
+        key: deno/${{ matrix.deno-version }}-${{ github.sha }}
 
     - name: Use Deno ${{ matrix.deno-version }}
-      uses: denoland/setup-deno@v1
+      uses: denoland/setup-deno@v2
       with:
         deno-version: ${{ matrix.deno-version }}
 
+    - name: 'Possibly reset lockfile'
+      run: deno install || rm deno.lock
+
     - name: Run test suite
-      run: deno test --allow-read=test test/*.js
+      run: deno task test
+
+  dry-run:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout source
+      uses: actions/checkout@v5
+
+    - name: Use stable Deno
+      uses: denoland/setup-deno@v2
+
+    - name: Cache Deno deps
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/deno
+        key: deno/publish-${{ github.sha }}
+
+    - name: Check publish rules
+      run: time deno publish --dry-run --allow-dirty
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: check
+    if: github.event_name == 'push'
+
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+    - name: Checkout source
+      uses: actions/checkout@v5
+
+    - name: Use stable Deno
+      uses: denoland/setup-deno@v2
+
+    - name: Cache Deno deps
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/deno
+        key: deno/publish-${{ github.sha }}
+    - name: Publish now
+      run: deno publish
diff --git a/README.md b/README.md
index 3dfe9f5..d092a73 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,18 @@
-![Test CI](https://github.com/danopia/deno-jmespath/workflows/CI/badge.svg?branch=main)
+![Test CI](https://github.com/danopia/jmespath/workflows/CI/badge.svg?branch=main)
 
-# deno.land/x/jmespath
+# JSR package `@cloudydeno/jmespath`
 
-A jmespath-ts fork, repackaged and ported to Deno.
-The `src/` directory is published to deno.land.
+A jmespath-ts fork, repackaged and ported to be Deno-first.
+The `src/` directory is published [to JSR](https://jsr.io/@cloudydeno/jmespath).
 The `test/` directory contains the upstream unit tests.
 
+
+```javascript
+// deno add jsr:@cloudydeno/jmespath
+
+import { search, compile } from '@cloudydeno/jmespath';
+```
+
 This library should be useful for JSON-heavy APIs such as AWS.
 
 In the process of porting,
diff --git a/deno.json b/deno.json
new file mode 100644
index 0000000..24b9597
--- /dev/null
+++ b/deno.json
@@ -0,0 +1,20 @@
+{
+  "name": "@cloudydeno/jmespath",
+  "version": "1.0.0",
+  "license": "MPL-2.0",
+  "exports": "./src/index.ts",
+  "imports": {
+    "@std/assert": "jsr:@std/assert@^1",
+    "@std/path": "jsr:@std/path@^1"
+  },
+  "tasks": {
+    "test": "deno test --allow-read=test test/*.js"
+  },
+  "publish": {
+    "exclude": [
+      ".editorconfig",
+      ".github",
+      "test"
+    ]
+  }
+}
diff --git a/deno.lock b/deno.lock
new file mode 100644
index 0000000..ddf2024
--- /dev/null
+++ b/deno.lock
@@ -0,0 +1,31 @@
+{
+  "version": "5",
+  "specifiers": {
+    "jsr:@std/assert@1": "1.0.14",
+    "jsr:@std/internal@^1.0.10": "1.0.10",
+    "jsr:@std/path@1": "1.1.2"
+  },
+  "jsr": {
+    "@std/assert@1.0.14": {
+      "integrity": "68d0d4a43b365abc927f45a9b85c639ea18a9fab96ad92281e493e4ed84abaa4",
+      "dependencies": [
+        "jsr:@std/internal"
+      ]
+    },
+    "@std/internal@1.0.10": {
+      "integrity": "e3be62ce42cab0e177c27698e5d9800122f67b766a0bea6ca4867886cbde8cf7"
+    },
+    "@std/path@1.1.2": {
+      "integrity": "c0b13b97dfe06546d5e16bf3966b1cadf92e1cc83e56ba5476ad8b498d9e3038",
+      "dependencies": [
+        "jsr:@std/internal"
+      ]
+    }
+  },
+  "workspace": {
+    "dependencies": [
+      "jsr:@std/assert@1",
+      "jsr:@std/path@1"
+    ]
+  }
+}
diff --git a/src/README.md b/src/README.md
index bb16427..ec647e2 100644
--- a/src/README.md
+++ b/src/README.md
@@ -14,7 +14,7 @@ given a JMESPath expression.
 ### `search(data: JSONValue, expression: string): JSONValue`
 
 ```javascript
-import { search } from "https://deno.land/x/jmespath/index.ts";
+import { search } from "jsr:@cloudydeno/jmespath";
 
 search({foo: {bar: {baz: [0, 1, 2, 3, 4]}}}, "foo.bar.baz[2]")
 
@@ -31,7 +31,7 @@ The JMESPath language can do *a lot* more than select an element
 from a list.  Here are a few more examples:
 
 ```javascript
-import { search } from "https://deno.land/x/jmespath/index.ts";
+import { search } from "jsr:@cloudydeno/jmespath";
 
 /* --- EXAMPLE 1 --- */
 
@@ -82,7 +82,7 @@ search(JSON_DOCUMENT, "foo[?age > `30`]");
 Extend the list of built in JMESpath expressions with your own functions.
 
 ```javascript
-  import {search, registerFunction, TYPE_NUMBER} from "https://deno.land/x/jmespath/index.ts";
+  import {search, registerFunction, TYPE_NUMBER} from "jsr:@cloudydeno/jmespath";
 
 
   search({ foo: 60, bar: 10 }, 'divide(foo, bar)')
@@ -109,7 +109,7 @@ function takes a JMESPath expression and returns an abstract syntax tree that
 can be used by the TreeInterpreter function
 
 ```javascript
-import { compile, TreeInterpreter } from "https://deno.land/x/jmespath/index.ts";
+import { compile, TreeInterpreter } from "jsr:@cloudydeno/jmespath";
 
 const ast = compile('foo.bar');
 
diff --git a/src/Runtime.ts b/src/Runtime.ts
index b7f7844..4f05136 100644
--- a/src/Runtime.ts
+++ b/src/Runtime.ts
@@ -84,7 +84,7 @@ export class Runtime {
   private validateArgs(name: string, args: any[], signature: InputSignature[]): void {
     let pluralized: boolean;
     this.validateInputSignatures(name, signature);
-    const numberOfRequiredArgs = signature.filter(argSignature => !argSignature.optional ?? false).length;
+    const numberOfRequiredArgs = signature.filter(argSignature => !argSignature.optional).length;
     const lastArgIsVariadic = signature[signature.length - 1]?.variadic ?? false;
     const tooFewArgs = args.length < numberOfRequiredArgs;
     const tooManyArgs = args.length > signature.length;
diff --git a/src/TreeInterpreter.ts b/src/TreeInterpreter.ts
index 6bbd7a7..12f4750 100644
--- a/src/TreeInterpreter.ts
+++ b/src/TreeInterpreter.ts
@@ -275,5 +275,5 @@ export class TreeInterpreter {
   }
 }
 
-export const TreeInterpreterInstance = new TreeInterpreter();
+export const TreeInterpreterInstance: TreeInterpreter = new TreeInterpreter();
 export default TreeInterpreterInstance;
diff --git a/src/index.ts b/src/index.ts
index 3330e4b..ed34421 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,7 +2,13 @@ import Parser from './Parser.ts';
 import Lexer from './Lexer.ts';
 import TreeInterpreterInst from './TreeInterpreter.ts';
 import type { ASTNode, LexerToken } from './Lexer.ts';
-import { InputArgument, RuntimeFunction, InputSignature } from './Runtime.ts';
+import { InputArgument, type RuntimeFunction, type InputSignature } from './Runtime.ts';
+
+export {
+  type ASTNode,
+  type Token,
+  type LexerToken,
+} from './Lexer.ts';
 
 export type { FunctionSignature, RuntimeFunction, InputSignature } from './Runtime.ts';
 export type ObjectDict<T = unknown> = Record<string, T | undefined>;
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 1783fb0..55c30c4 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -46,7 +46,7 @@ export const isFalse = (obj: unknown): boolean => {
   }
   if (isObject(obj)) {
     for (const key in obj) {
-      if (obj.hasOwnProperty(key)) {
+      if (Object.hasOwn(obj, key)) {
         return false;
       }
     }
diff --git a/test/compliance.spec.js b/test/compliance.spec.js
index 804e791..22916a2 100644
--- a/test/compliance.spec.js
+++ b/test/compliance.spec.js
@@ -2,7 +2,8 @@
 /* eslint-disable @typescript-eslint/no-var-requires */
 import { search } from '../src/index.ts';
 
-import { basename, join } from 'https://deno.land/std@0.140.0/path/mod.ts';
+import { basename } from '@std/path/basename';
+import { join } from '@std/path/join';
 import { describe, it, expect, each } from './deno-shim.js';
 
 // Compliance tests that aren't supported yet.
diff --git a/test/compliance/syntax.json b/test/compliance/syntax.json
index 2b1a1d2..caa295f 100644
--- a/test/compliance/syntax.json
+++ b/test/compliance/syntax.json
@@ -470,7 +470,7 @@
       },
       {
         "expression": "\"foo",
-        "error": "Unexpected end of JSON input"
+        "error": "Unterminated string in JSON at position 4 (line 1 column 5)"
       }
     ]
   },
@@ -523,7 +523,7 @@
       {
         "comment": "Literal char not escaped",
         "expression": "foo[?bar==`[\"foo`bar\"]`]",
-        "error": "Unexpected end of JSON input"
+        "error": "Unterminated string in JSON at position 5 (line 1 column 6)"
       },
       {
         "comment": "Literal char escaped",
diff --git a/test/deno-shim.js b/test/deno-shim.js
index c2d5648..cc3f6a3 100644
--- a/test/deno-shim.js
+++ b/test/deno-shim.js
@@ -1,7 +1,7 @@
-import {
-  assertEquals, assertStrictEquals,
-  assertThrows, assertStringIncludes,
-} from "https://deno.land/std@0.140.0/testing/asserts.ts";
+import { assertEquals } from "@std/assert/equals";
+import { assertStrictEquals } from "@std/assert/strict-equals";
+import { assertThrows } from "@std/assert/throws";
+import { assertStringIncludes } from "@std/assert/string-includes";
 
 const suiteStack = [];