JSFiddle - React, Tailwind, and code Playground

JavaScript

var strArr = [
    'Call myFunc("parameter")',
    'If(myFunc("parameter") And someFunc("myFunc"))',
    'Call anotherFunc("myFunc")',
    'Call someFunc("parameter") \'Comment myFunc',
    '\'Call myFunc("parameter")'
]

for(i in strArr) {
    if(/^\s*[^'].*\bmyFunc\(/.test(strArr[i]))
        console.log(strArr[i] + " passed.");
    else
        console.log(strArr[i] + " failed.");
}