Current File : /home/vacivi36/vittasync.vacivitta.com.br/vittasync/node/lib/sea.js
'use strict';
const {
ArrayBufferPrototypeSlice,
} = primordials;
const { isSea, getAsset: getAssetInternal } = internalBinding('sea');
const { TextDecoder } = require('internal/encoding');
const { validateString } = require('internal/validators');
const {
ERR_NOT_IN_SINGLE_EXECUTABLE_APPLICATION,
ERR_SINGLE_EXECUTABLE_APPLICATION_ASSET_NOT_FOUND,
} = require('internal/errors').codes;
const { Blob } = require('internal/blob');
/**
* Look for the asset in the injected SEA blob using the key. If
* no matching asset is found an error is thrown. The returned
* ArrayBuffer should not be mutated or otherwise the process
* can crash due to access violation.
* @param {string} key
* @returns {ArrayBuffer}
*/
function getRawAsset(key) {
validateString(key, 'key');
if (!isSea()) {
throw new ERR_NOT_IN_SINGLE_EXECUTABLE_APPLICATION();
}
const asset = getAssetInternal(key);
if (asset === undefined) {
throw new ERR_SINGLE_EXECUTABLE_APPLICATION_ASSET_NOT_FOUND(key);
}
return asset;
}
/**
* Look for the asset in the injected SEA blob using the key. If the
* encoding is specified, return a string decoded from it by TextDecoder,
* otherwise return *a copy* of the original data in an ArrayBuffer. If
* no matching asset is found an error is thrown.
* @param {string} key
* @param {string|undefined} encoding
* @returns {string|ArrayBuffer}
*/
function getAsset(key, encoding) {
if (encoding !== undefined) {
validateString(encoding, 'encoding');
}
const asset = getRawAsset(key);
if (encoding === undefined) {
return ArrayBufferPrototypeSlice(asset);
}
const decoder = new TextDecoder(encoding);
return decoder.decode(asset);
}
/**
* Look for the asset in the injected SEA blob using the key. If
* no matching asset is found an error is thrown. The data is returned
* in a Blob. If no matching asset is found an error is thrown.
* @param {string} key
* @param {ConstructorParameters<Blob>[1]} [options]
* @returns {Blob}
*/
function getAssetAsBlob(key, options) {
const asset = getRawAsset(key);
return new Blob([asset], options);
}
module.exports = {
isSea,
getAsset,
getRawAsset,
getAssetAsBlob,
};
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