Accessors are only available when targeting ECMAScript 5 and higher

Question

I am trying to run this code but it is giving me following errors:

Animal.ts(10,13): error TS1056: Accessors are only available when targeting ECMAS

Answer 1

I had the same problem trying to compile TypeScript code with Visual Studio Code. This solved the issue:

1) tsconfig.json - add the target in the compilerOptions:

{
    "compilerOptions": {
        "target": "es5",  // <-- here!
        "module": "commonjs",
        "sourceMap": true
    }
}

2) tasks.json - add the target argument:

{
    "version": "2.0.0",
    "tasks": [
        {
            "taskName": "build",
            "type": "process",
            "command": "tsc",
            "args": [
                "ts/Program.ts",
                "--outDir", "js",
                "--sourceMap",
                "--watch",
                "--target", "es5"  // <-- here!
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "presentation": {
                "reveal": "always"
            },
            "problemMatcher": "$tsc"
        }
    ]
}