tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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object-spread.js (1292B)

      1 // |reftest| skip-if(!xulRuntime.shell)
      2 
      3 function property(key, value = key, shorthand = key === value) {
      4    return { key, value, shorthand };
      5 }
      6 
      7 function test() {
      8    // Any expression can be spreaded.
      9    assertExpr("({...x})", objExpr([spread(ident("x"))]));
     10    assertExpr("({...f()})", objExpr([spread(callExpr(ident("f"), []))]));
     11    assertExpr("({...123})", objExpr([spread(lit(123))]));
     12 
     13    // Multiple spread expression are allowed.
     14    assertExpr("({...x, ...obj.p})", objExpr([spread(ident("x")), spread(dotExpr(ident("obj"), ident("p")))]));
     15 
     16    // Spread expression can appear anywhere in an object literal.
     17    assertExpr("({p, ...x})", objExpr([property(ident("p")), spread(ident("x"))]));
     18    assertExpr("({p: a, ...x})", objExpr([property(ident("p"), ident("a")), spread(ident("x"))]));
     19    assertExpr("({...x, p: a})", objExpr([spread(ident("x")), property(ident("p"), ident("a"))]));
     20 
     21    // Trailing comma after spread expression is allowed.
     22    assertExpr("({...x,})", objExpr([spread(ident("x"))]));
     23 
     24    // __proto__ is not special in spread expressions.
     25    assertExpr("({...__proto__})", objExpr([spread(ident("__proto__"))]));
     26    assertExpr("({...__proto__, ...__proto__})", objExpr([spread(ident("__proto__")), spread(ident("__proto__"))]));
     27 }
     28 
     29 runtest(test);