backend-base/dist/utils.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const crypto_1 = require("crypto");
const logger_1 = require("./logger");
/* istanbul ignore next */
function lastItem(arr) {
    return arr.length === 0 ? undefined : arr[arr.length - 1];
}
exports.lastItem = lastItem;
function removeItem(arr, item) {
    const pos = arr.indexOf(item);
    /* istanbul ignore next */
    if (pos === -1) {
        return arr;
    }
    return arr.slice(0, pos).concat(arr.slice(pos + 1));
}
exports.removeItem = removeItem;
function removeItemOrNever(arr, item) {
    const res = removeItem(arr, item);
    /* istanbul ignore next */
    if (res === arr) {
        return never();
    }
    return res;
}
exports.removeItemOrNever = removeItemOrNever;
/* istanbul ignore next */
function never(value) {
    throw new logger_1.Exception(`Never possible value`, { value });
}
exports.never = never;
function sleep(ms) {
    return new Promise(res => setTimeout(res, ms));
}
exports.sleep = sleep;
function verifySignature(data, signatureBase64, publicKey) {
    const verifier = crypto_1.createVerify('SHA256');
    verifier.update(data);
    return verifier.verify(publicKey, signatureBase64, 'base64');
}
exports.verifySignature = verifySignature;
function normalToWebSafeBase64(normalBase64) {
    return normalBase64
        .replace(/\+/g, '-')
        .replace(/\//g, '_')
        .replace(/=+$/, '');
}
exports.normalToWebSafeBase64 = normalToWebSafeBase64;
function webSafeToNormalBase64(safeBase64) {
    return safeBase64.replace(/\-/g, '+').replace(/_/g, '/') + '=='.substring(0, (3 * safeBase64.length) % 4);
}
exports.webSafeToNormalBase64 = webSafeToNormalBase64;
function getEnv(name) {
    const val = process.env[name];
    if (val === undefined)
        throw new logger_1.Exception(`Env variable should be specified`, { name });
    return val;
}
exports.getEnv = getEnv;
function getEnvNullable(name) {
    return process.env[name];
}
exports.getEnvNullable = getEnvNullable;
function nonNull(value) {
    if (value === undefined || value === null)
        throw new logger_1.Exception('Value cannot be undefined or null', { value });
    return value;
}
exports.nonNull = nonNull;
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