@tevm/voltaire

@tevm/voltaire / primitives/Base64

primitives/Base64

Type Aliases

Base64Like

Base64Like = BrandedBase64 | string | Uint8Array

Defined in: src/primitives/Base64/Base64Type.ts:19 Inputs that can be converted to BrandedBase64

Base64UrlLike

Base64UrlLike = BrandedBase64Url | string | Uint8Array

Defined in: src/primitives/Base64/Base64Type.ts:37 Inputs that can be converted to BrandedBase64Url

BrandedBase64

BrandedBase64 = string & object

Defined in: src/primitives/Base64/Base64Type.ts:12 Branded Base64 string type Standard Base64 encoding (RFC 4648):

Alphabet: A-Z, a-z, 0-9, +, /
Padding: = (required, length must be multiple of 4)

Type safety ensures only validated Base64 strings are used.

Type Declaration

[brand]

readonly [brand]: "Base64"

BrandedBase64Url

BrandedBase64Url = string & object

Defined in: src/primitives/Base64/Base64Type.ts:30 Branded Base64Url string type URL-safe Base64 encoding (RFC 4648):

Alphabet: A-Z, a-z, 0-9, -, _
Padding: typically omitted

Type safety ensures only validated Base64Url strings are used.

Type Declaration

[brand]

readonly [brand]: "Base64Url"

Variables

Base64

const Base64: object

Defined in: src/primitives/Base64/Base64.js:77 Base64 encoding/decoding namespace Standard and URL-safe base64 encoding with proper padding. Built on Web APIs for maximum performance and compatibility.

Type Declaration

calcDecodedSize()

calcDecodedSize: (encodedLength) => number

Calculate decoded size in bytes

Parameters

encodedLength

number Length of base64 string

Returns

number Maximum size of decoded output

calcEncodedSize()

calcEncodedSize: (dataLength) => number

Calculate encoded size in bytes

Parameters

dataLength

number Length of data to encode

Returns

number Size of base64 output

decode()

decode: (encoded) => Uint8Array<ArrayBufferLike>

Decode standard base64 string to bytes

Parameters

encoded

string Base64 string to decode

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

See

https://voltaire.tevm.sh/primitives/base64 for Base64 documentation

Since

0.0.0

Throws

If input is invalid base64

Example

import * as Base64 from './primitives/Base64/index.js';
const decoded = Base64.decode('SGVsbG8=');
// Uint8Array([72, 101, 108, 108, 111])

decodeToString()

decodeToString: (encoded) => string

Decode base64 string to UTF-8 string

Parameters

encoded

string Base64 string

Returns

string Decoded string

Example

const str = Base64.decodeToString('SGVsbG8=');
// "Hello"

decodeUrlSafe()

decodeUrlSafe: (encoded) => Uint8Array<ArrayBufferLike>

Decode URL-safe base64 string to bytes

Parameters

encoded

string URL-safe base64 string

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

Throws

If input is invalid

decodeUrlSafeToString()

decodeUrlSafeToString: (encoded) => string

Decode URL-safe base64 to UTF-8 string

Parameters

encoded

string URL-safe base64 string

Returns

string Decoded string

encode()

encode: (data) => BrandedBase64

Encode bytes to standard base64 string Uses standard base64 alphabet (A-Z, a-z, 0-9, +, /) with padding (=)

Parameters

data

Uint8Array<ArrayBufferLike> Bytes to encode

Returns

BrandedBase64 Base64-encoded string

Example

const data = new Uint8Array([72, 101, 108, 108, 111]);
const encoded = Base64.encode(data);
// "SGVsbG8="

encodeString()

encodeString: (str) => string

Encode string to base64

Parameters

str

string String to encode (UTF-8)

Returns

string Base64-encoded string

Example

const encoded = Base64.encodeString('Hello, world!');

encodeStringUrlSafe()

encodeStringUrlSafe: (str) => BrandedBase64Url

Encode string to URL-safe base64

Parameters

str

string String to encode (UTF-8)

Returns

BrandedBase64Url URL-safe base64 string

encodeUrlSafe()

encodeUrlSafe: (data) => BrandedBase64Url

Encode bytes to URL-safe base64 string Uses URL-safe alphabet (A-Z, a-z, 0-9, -, _) without padding

Parameters

data

Uint8Array<ArrayBufferLike> Bytes to encode

Returns

BrandedBase64Url URL-safe base64 string

Example

const data = new Uint8Array([255, 254, 253]);
const encoded = Base64.encodeUrlSafe(data);
// No padding, uses - and _ instead of + and /

from()

from: (value) => BrandedBase64

Convert input to BrandedBase64

Parameters

value

Base64Like Input to convert

Returns

BrandedBase64 Branded Base64 string

Throws

If input cannot be converted to valid Base64

Example

// From string
const b64 = Base64.from("SGVsbG8=");

// From bytes
const data = new Uint8Array([1, 2, 3]);
const b64 = Base64.from(data);

fromUrlSafe()

fromUrlSafe: (value) => BrandedBase64Url

Convert input to BrandedBase64Url

Parameters

value

Base64UrlLike Input to convert

Returns

BrandedBase64Url Branded Base64Url string

Throws

If input cannot be converted to valid Base64Url

Example

// From string
const b64url = Base64.fromUrlSafe("SGVsbG8");

// From bytes
const data = new Uint8Array([1, 2, 3]);
const b64url = Base64.fromUrlSafe(data);

isValid()

isValid: (str) => boolean

Check if string is valid base64

Parameters

str

string String to validate

Returns

boolean True if valid base64

isValidUrlSafe()

isValidUrlSafe: (str) => boolean

Check if string is valid URL-safe base64

Parameters

str

string String to validate

Returns

boolean True if valid URL-safe base64

toBase64()

toBase64: (value) => BrandedBase64

Convert BrandedBase64Url to BrandedBase64

Parameters

value

BrandedBase64Url Base64Url string

Returns

BrandedBase64 Base64 string

Example

const b64url = Base64.fromUrlSafe("SGVsbG8");
const b64 = Base64.toBase64(b64url);
// "SGVsbG8=" (with padding)

toBase64Url()

toBase64Url: (value) => BrandedBase64Url

Convert BrandedBase64 to BrandedBase64Url

Parameters

value

BrandedBase64 Base64 string

Returns

BrandedBase64Url Base64Url string

Example

const b64 = Base64.from("SGVsbG8=");
const b64url = Base64.toBase64Url(b64);
// "SGVsbG8" (no padding, URL-safe)

toBytes()

toBytes: (value) => Uint8Array<ArrayBufferLike>

Convert BrandedBase64 to bytes

Parameters

value

BrandedBase64 Base64 string

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

Example

const b64 = Base64.from("SGVsbG8=");
const bytes = Base64.toBytes(b64);
// Uint8Array([72, 101, 108, 108, 111])

toBytesUrlSafe()

toBytesUrlSafe: (value) => Uint8Array<ArrayBufferLike>

Convert BrandedBase64Url to bytes

Parameters

value

BrandedBase64Url Base64Url string

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

Example

const b64url = Base64.fromUrlSafe("SGVsbG8");
const bytes = Base64.toBytesUrlSafe(b64url);
// Uint8Array([72, 101, 108, 108, 111])

toString()

toString: (value) => string

Convert BrandedBase64 to plain string (strip branding)

Parameters

value

BrandedBase64 Base64 string

Returns

string Plain string

Example

const b64 = Base64.from("SGVsbG8=");
const str = Base64.toString(b64);
// "SGVsbG8=" (plain string)

toStringUrlSafe()

toStringUrlSafe: (value) => string

Convert BrandedBase64Url to plain string (strip branding)

Parameters

value

BrandedBase64Url Base64Url string

Returns

string Plain string

Example

const b64url = Base64.fromUrlSafe("SGVsbG8");
const str = Base64.toStringUrlSafe(b64url);
// "SGVsbG8" (plain string)

Example

// Encode bytes to base64
const data = new Uint8Array([1, 2, 3]);
const encoded = Base64.encode(data);

// Decode base64 to bytes
const decoded = Base64.decode(encoded);

// URL-safe encoding
const urlSafe = Base64.encodeUrlSafe(data);

// Branded types
const b64 = Base64.from("SGVsbG8=");
const bytes = Base64.toBytes(b64);

Functions

calcDecodedSize()

calcDecodedSize(encodedLength): number

Defined in: src/primitives/Base64/calcDecodedSize.js:7 Calculate decoded size in bytes

Parameters

encodedLength

number Length of base64 string

Returns

number Maximum size of decoded output

calcEncodedSize()

calcEncodedSize(dataLength): number

Defined in: src/primitives/Base64/calcEncodedSize.js:7 Calculate encoded size in bytes

Parameters

dataLength

number Length of data to encode

Returns

number Size of base64 output

decode()

decode(encoded): Uint8Array<ArrayBufferLike>

Defined in: src/primitives/Base64/decode.js:19 Decode standard base64 string to bytes

Parameters

encoded

string Base64 string to decode

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

See

https://voltaire.tevm.sh/primitives/base64 for Base64 documentation

Since

0.0.0

Throws

If input is invalid base64

Example

import * as Base64 from './primitives/Base64/index.js';
const decoded = Base64.decode('SGVsbG8=');
// Uint8Array([72, 101, 108, 108, 111])

decodeToString()

decodeToString(encoded): string

Defined in: src/primitives/Base64/decodeToString.js:15 Decode base64 string to UTF-8 string

Parameters

encoded

string Base64 string

Returns

string Decoded string

Example

const str = Base64.decodeToString('SGVsbG8=');
// "Hello"

decodeUrlSafe()

decodeUrlSafe(encoded): Uint8Array<ArrayBufferLike>

Defined in: src/primitives/Base64/decodeUrlSafe.js:10 Decode URL-safe base64 string to bytes

Parameters

encoded

string URL-safe base64 string

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

Throws

If input is invalid

decodeUrlSafeToString()

decodeUrlSafeToString(encoded): string

Defined in: src/primitives/Base64/decodeUrlSafeToString.js:9 Decode URL-safe base64 to UTF-8 string

Parameters

encoded

string URL-safe base64 string

Returns

string Decoded string

encode()

encode(data): BrandedBase64

Defined in: src/primitives/Base64/encode.js:19 Encode bytes to standard base64 string Uses standard base64 alphabet (A-Z, a-z, 0-9, +, /) with padding (=)

Parameters

data

Uint8Array<ArrayBufferLike> Bytes to encode

Returns

BrandedBase64 Base64-encoded string

Example

const data = new Uint8Array([72, 101, 108, 108, 111]);
const encoded = Base64.encode(data);
// "SGVsbG8="

encodeString()

encodeString(str): string

Defined in: src/primitives/Base64/encodeString.js:14 Encode string to base64

Parameters

str

string String to encode (UTF-8)

Returns

string Base64-encoded string

Example

const encoded = Base64.encodeString('Hello, world!');

encodeStringUrlSafe()

encodeStringUrlSafe(str): BrandedBase64Url

Defined in: src/primitives/Base64/encodeStringUrlSafe.js:9 Encode string to URL-safe base64

Parameters

str

string String to encode (UTF-8)

Returns

BrandedBase64Url URL-safe base64 string

encodeUrlSafe()

encodeUrlSafe(data): BrandedBase64Url

Defined in: src/primitives/Base64/encodeUrlSafe.js:19 Encode bytes to URL-safe base64 string Uses URL-safe alphabet (A-Z, a-z, 0-9, -, _) without padding

Parameters

data

Uint8Array<ArrayBufferLike> Bytes to encode

Returns

BrandedBase64Url URL-safe base64 string

Example

const data = new Uint8Array([255, 254, 253]);
const encoded = Base64.encodeUrlSafe(data);
// No padding, uses - and _ instead of + and /

from()

from(value): BrandedBase64

Defined in: src/primitives/Base64/from.js:21 Convert input to BrandedBase64

Parameters

value

Base64Like Input to convert

Returns

BrandedBase64 Branded Base64 string

Throws

If input cannot be converted to valid Base64

Example

// From string
const b64 = Base64.from("SGVsbG8=");

// From bytes
const data = new Uint8Array([1, 2, 3]);
const b64 = Base64.from(data);

fromUrlSafe()

fromUrlSafe(value): BrandedBase64Url

Defined in: src/primitives/Base64/fromUrlSafe.js:21 Convert input to BrandedBase64Url

Parameters

value

Base64UrlLike Input to convert

Returns

BrandedBase64Url Branded Base64Url string

Throws

If input cannot be converted to valid Base64Url

Example

// From string
const b64url = Base64.fromUrlSafe("SGVsbG8");

// From bytes
const data = new Uint8Array([1, 2, 3]);
const b64url = Base64.fromUrlSafe(data);

isValid()

isValid(str): boolean

Defined in: src/primitives/Base64/isValid.js:7 Check if string is valid base64

Parameters

str

string String to validate

Returns

boolean True if valid base64

isValidUrlSafe()

isValidUrlSafe(str): boolean

Defined in: src/primitives/Base64/isValidUrlSafe.js:7 Check if string is valid URL-safe base64

Parameters

str

string String to validate

Returns

boolean True if valid URL-safe base64

toBase64()

toBase64(value): BrandedBase64

Defined in: src/primitives/Base64/toBase64.js:17 Convert BrandedBase64Url to BrandedBase64

Parameters

value

BrandedBase64Url Base64Url string

Returns

BrandedBase64 Base64 string

Example

const b64url = Base64.fromUrlSafe("SGVsbG8");
const b64 = Base64.toBase64(b64url);
// "SGVsbG8=" (with padding)

toBase64Url()

toBase64Url(value): BrandedBase64Url

Defined in: src/primitives/Base64/toBase64Url.js:17 Convert BrandedBase64 to BrandedBase64Url

Parameters

value

BrandedBase64 Base64 string

Returns

BrandedBase64Url Base64Url string

Example

const b64 = Base64.from("SGVsbG8=");
const b64url = Base64.toBase64Url(b64);
// "SGVsbG8" (no padding, URL-safe)

toBytes()

toBytes(value): Uint8Array<ArrayBufferLike>

Defined in: src/primitives/Base64/toBytes.js:16 Convert BrandedBase64 to bytes

Parameters

value

BrandedBase64 Base64 string

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

Example

const b64 = Base64.from("SGVsbG8=");
const bytes = Base64.toBytes(b64);
// Uint8Array([72, 101, 108, 108, 111])

toBytesUrlSafe()

toBytesUrlSafe(value): Uint8Array<ArrayBufferLike>

Defined in: src/primitives/Base64/toBytesUrlSafe.js:16 Convert BrandedBase64Url to bytes

Parameters

value

BrandedBase64Url Base64Url string

Returns

Uint8Array<ArrayBufferLike> Decoded bytes

Example

const b64url = Base64.fromUrlSafe("SGVsbG8");
const bytes = Base64.toBytesUrlSafe(b64url);
// Uint8Array([72, 101, 108, 108, 111])

toString()

toString(value): string

Defined in: src/primitives/Base64/toString.js:15 Convert BrandedBase64 to plain string (strip branding)

Parameters

value

BrandedBase64 Base64 string

Returns

string Plain string

Example

const b64 = Base64.from("SGVsbG8=");
const str = Base64.toString(b64);
// "SGVsbG8=" (plain string)

toStringUrlSafe()

toStringUrlSafe(value): string

Defined in: src/primitives/Base64/toStringUrlSafe.js:14 Convert BrandedBase64Url to plain string (strip branding)

Parameters

value

BrandedBase64Url Base64Url string

Returns

string Plain string

Example

const b64url = Base64.fromUrlSafe("SGVsbG8");
const str = Base64.toStringUrlSafe(b64url);
// "SGVsbG8" (plain string)

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Generated API (TypeDoc)

​primitives/Base64

​Type Aliases

​Base64Like

​Base64UrlLike

​BrandedBase64

​Type Declaration

[brand]

​BrandedBase64Url

​Type Declaration

[brand]

​Variables

​Base64

​Type Declaration

calcDecodedSize()

Parameters

encodedLength

Returns

calcEncodedSize()

Parameters

dataLength

Returns

decode()

Parameters

encoded

Returns

See

Since

Throws

Example

decodeToString()

Parameters

encoded

Returns

Example

decodeUrlSafe()

Parameters

encoded

Returns

Throws

decodeUrlSafeToString()

Parameters

encoded

Returns

encode()

Parameters

data

Returns

Example

encodeString()

Parameters

str

Returns

Example

encodeStringUrlSafe()

Parameters

str

Returns

encodeUrlSafe()

Parameters

data

Returns

Example

from()

Parameters

primitives/Base64

Type Aliases

Base64Like

Base64UrlLike

BrandedBase64

Type Declaration

BrandedBase64Url

Type Declaration

Variables

Base64

Type Declaration

Example

Functions

calcDecodedSize()

Parameters

Returns

calcEncodedSize()

Parameters

Returns

decode()

Parameters

Returns

See

Since

Throws

Example

decodeToString()

Parameters