Defining different kinds of numbers for a more precise mapping of types can be a necessity JavaScript has a unique type Number covering both integer and float numbers . For instance, a perfect mapping with WebAssembly number types can be very useful for a JavaScript module interacting with a Wasm module. Therefore, TypexJS defines a few subsidiary types:

• 32-bit integer
• 64-bit integer
• 128-bit integer (BigInt)
• 32-bit float
• 64-bit float

Type	Suffix
32-bit integer	_i
64-bit integer	_i1
128-bit integer	_i2
32-bit float	_f
64-bit float	_f1

These specifiers use one letter, either i or f i for an integer number
f for a float number , and eventualy append a number 1 or 2 1 for a 64-bit number
2 for a 128-bit number for the number width in bits.

To memorize easily those number specifiers, one has to think that numbers are at least 32-bit wide and the number appended after the specifier letter means: left shift 32 (bits) by 1 or 2. 64 = 32 << 1
128 = 32 << 2
for the sake of brevity, there is no 0 after the letter (i or f) for 32-bit number types .