It does not mean the value it holds is immutable-just that the variable identifier cannot be reassigned. The const declaration creates a read-only reference to a value.
(This makes sense, given that it can't be changed later.) You must specify its value in the same declaration. Global constants do not become properties of the globalThis object, unlike var variables.Īn initializer for a constant is required. This declaration creates a constant whose scope can be either global or local to the block in which it is declared.
#Dvd2onex constant or variable code#
Warning: unreachable code after return statement. Warning: -file- is being assigned a //# sourceMappingURL, but already has one. TypeError: X.prototype.y called on incompatible type. TypeError: setting getter-only property "x". TypeError: Reduce of empty array with no initial value. TypeError: property "x" is non-configurable and can't be deleted. TypeError: invalid assignment to const "x". TypeError: invalid 'instanceof' operand 'x'. TypeError: cannot use 'in' operator to search for 'x' in 'y'. TypeError: can't redefine non-configurable property "x". TypeError: can't delete non-configurable array element. TypeError: can't define property "x": "obj" is not extensible. TypeError: can't convert BigInt to number. TypeError: can't assign to property "x" on "y": not an object. TypeError: "x" is not a non-null object. Synta圎rror: Using to indicate sourceURL pragmas is deprecated. Synta圎rror: unterminated string literal. Synta圎rror: unparenthesized unary expression can't appear on the left-hand side of '**'. Synta圎rror: unlabeled break must be inside loop or switch. Synta圎rror: Unexpected '#' used outside of class body. Synta圎rror: test for equality (=) mistyped as assignment (=)?. Synta圎rror: redeclaration of formal parameter "x". Synta圎rror: missing = in const declaration. Synta圎rror: missing } after property list. Synta圎rror: missing } after function body. Synta圎rror: missing ] after element list. Synta圎rror: missing ) after argument list. Synta圎rror: missing : after property id. Synta圎rror: invalid regular expression flag "x". Synta圎rror: invalid assignment left-hand side. Synta圎rror: identifier starts immediately after numeric literal. Synta圎rror: function statement requires a name. Synta圎rror: for-in loop head declarations may not have initializers. Synta圎rror: continue must be inside loop. Synta圎rror: cannot use `?` unparenthesized within `||` and `&` expressions. Synta圎rror: await is only valid in async functions, async generators and modules. Synta圎rror: applying the 'delete' operator to an unqualified name is deprecated. Synta圎rror: a declaration in the head of a for-of loop can't have an initializer. Synta圎rror: "x" is a reserved identifier. Synta圎rror: "use strict" not allowed in function with non-simple parameters. Synta圎rror: "0"-prefixed octal literals and octal escape seq. ReferenceError: reference to undefined property "x". ReferenceError: deprecated caller or arguments usage. ReferenceError: can't access lexical declaration 'X' before initialization. ReferenceError: assignment to undeclared variable "x". RangeError: x can't be converted to BigInt because it isn't an integer. RangeError: repeat count must be non-negative. 
RangeError: repeat count must be less than infinity.RangeError: argument is not a valid code point.Error: Permission denied to access property "x".Enumerability and ownership of properties.
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