When you’re a JavaScript developer, but you like Python syntax more.

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class Greeter constructor name, nameChangeable true this.name name this.nameChangeable nameChangeable sayHi console.log "He116, this.name) I changeName newName if newName. length was 0 console.error Name can’t be empty! else if this.nameChangeable console.log The name was changed "to nevName? this.name newName else console.error Name can’t be changed new Greeter "Bob" true sayHi (