Error: Stryker Doesn't Run

[JimLynchCodes]

installed:

npm i -D stryker-cli

run with:

npm run stryker -- run

Error:

angular14-project@0.0.0 stryker
stryker run

(node:52457) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use node --trace-warnings ... to show where the warning was created)
/Users/jim/Git-Projects/aoc-23-day-4-elf-scratchcards/Angular14Project/node_modules/.bin/stryker:2
import { StrykerCli } from '../dist/src/index.js';
^^^^^^

SyntaxError: Cannot use import statement outside a module
at internalCompileFunction (node:internal/vm:73:18)
at wrapSafe (node:internal/modules/cjs/loader:1178:20)
at Module._compile (node:internal/modules/cjs/loader:1220:27)
at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
at Module.load (node:internal/modules/cjs/loader:1119:32)
at Module._load (node:internal/modules/cjs/loader:960:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:23:47

Node.js v18.17.0

[nicojs]

Hi Jim, you shouldn't install the stryker-cli locally. Please install stryker itself:

npm i -D @stryker-mutator/core

The core package comes with its own stryker binary, so npx stryker run (or npm run stryker -- run) should work.