fisher@Fishers-MBP js-callgraph % js-callgraph --output test.json --reqJs --cg input-scripts/simple-scripts/functioncall-arithmetic.js /usr/local/lib/node_modules/@persper/js-callgraph/src/requireJsGraph.js:18 var partialFileName = regexParse[2] + ".js", ^ TypeError: Cannot read property '2' of null at Object.makeRequireJsGraph (/usr/local/lib/node_modules/@persper/js-callgraph/src/requireJsGraph.js:18:41) at Object.build (/usr/local/lib/node_modules/@persper/js-callgraph/src/runner.js:167:28) at Object.<anonymous> (/usr/local/lib/node_modules/@persper/js-callgraph/js-callgraph.js:117:5) at Module._compile (node:internal/modules/cjs/loader:1108:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10) at Module.load (node:internal/modules/cjs/loader:988:32) at Function.Module._load (node:internal/modules/cjs/loader:828:14) at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12) at node:internal/main/run_main_module:17:47` 

fisher@Fishers-MBP js-callgraph % node -v v16.0.0