StdLib Global Console

Global Functions and Console

Global functions available without qualification, and the console API.

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Global Functions

Implementation Status: 100% Complete

Function	Status	Description
eval(code)	Implemented	Evaluates JavaScript code
parseInt(string, radix)	Implemented	Parses integer (radix 2-36)
parseFloat(string)	Implemented	Parses floating-point
isNaN(value)	Implemented	Checks for NaN (coerces to number)
isFinite(value)	Implemented	Checks for finite (coerces to number)
encodeURI(uri)	Implemented	Encodes URI
decodeURI(uri)	Implemented	Decodes URI
encodeURIComponent(str)	Implemented	Encodes URI component
decodeURIComponent(str)	Implemented	Decodes URI component
escape(string)	Implemented	URL encoding (deprecated)
unescape(string)	Implemented	URL decoding (deprecated)
globalThis	Implemented	Reference to global object

eval()

Full implementation supporting:

• Direct eval (caller's scope)
• Indirect eval (global scope)
• Strict mode propagation
• Private name validation
• Super reference validation

// Direct eval - uses local scope
function f() {
    const x = 1;
    return eval("x");  // 1
}

// Indirect eval - uses global scope
const geval = eval;
function g() {
    const x = 1;
    return geval("x");  // ReferenceError
}

parseInt vs Number.parseInt

// Identical behavior
parseInt("42", 10);        // 42
Number.parseInt("42", 10); // 42

// Auto-detect hex
parseInt("0xFF");          // 255
parseInt("0xFF", 16);      // 255
parseInt("FF", 16);        // 255

isNaN vs Number.isNaN

// Global isNaN coerces to number first
isNaN("hello");        // true (coerces to NaN)
isNaN(undefined);      // true (coerces to NaN)

// Number.isNaN is type-strict
Number.isNaN("hello"); // false (not a number)
Number.isNaN(NaN);     // true

URI Functions

Function	Reserved Characters
encodeURI	;/?:@&=+$,# (not encoded)
encodeURIComponent	None (all special chars encoded)

const url = "https://example.com/?q=hello world";
encodeURI(url);           // "https://example.com/?q=hello%20world"
encodeURIComponent(url);  // "https%3A%2F%2Fexample.com%2F%3Fq%3Dhello%20world"

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Console

Implementation Status: Partial (5/18 methods)

Implemented Methods

Method	Status	Description
console.log(...args)	Implemented	Outputs to stdout
console.error(...args)	Implemented	Outputs to stderr
console.warn(...args)	Implemented	Outputs with "Warning: " prefix
console.info(...args)	Implemented	Outputs to stdout
console.debug(...args)	Implemented	Outputs with "Debug: " prefix

Not Implemented Methods

Method	Status	Description
console.trace()	Not Implemented	Stack trace
console.time(label)	Not Implemented	Start timer
console.timeEnd(label)	Not Implemented	End timer
console.timeLog(label)	Not Implemented	Log timer
console.assert(condition, ...args)	Not Implemented	Conditional log
console.count(label)	Not Implemented	Count calls
console.countReset(label)	Not Implemented	Reset count
console.group(label)	Not Implemented	Start group
console.groupEnd()	Not Implemented	End group
console.groupCollapsed(label)	Not Implemented	Collapsed group
console.clear()	Not Implemented	Clear console
console.dir(obj)	Not Implemented	Object inspection
console.table(data)	Not Implemented	Tabular display

Output Formatting

console.log("Hello", "World");     // "Hello World"
console.log({ x: 1, y: 2 });       // {"x":1,"y":2}
console.log([1, 2, 3]);            // [1,2,3]
console.log(function f() {});      // [Function]
console.log(null, undefined);      // "null undefined"

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Global Object Properties

Property	Value
globalThis	The global object
undefined	The undefined value
NaN	Not-a-Number
Infinity	Positive infinity

Files

Category	Files
Global Functions	StdLib/Global/GlobalHelper.cs
eval	StdLib/Global/EvalHostFunction.cs
Console	StdLib/Console/ConsolePrototype.cs

See Also

• StdLib-Number-Math - Number.parseInt/parseFloat comparison
• JsEnvironment-and-Slots - How eval accesses scopes