lambda-live-debugger
Version:
Debug Lambda functions locally like it is running in the cloud
102 lines (101 loc) • 4.03 kB
JavaScript
const ddd = `(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun)(?:[ne|u?r]?s?day)?`;
const mmm = `(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)`;
const time = `(\\d?\\d):(\\d{2}):(\\d{2})(?:\\.(\\d+))?`;
const date = `(\\d?\\d)`;
const year = `(\\d{4})`;
const RFC3339_WITH_OFFSET = new RegExp(/^(\d{4})-(\d\d)-(\d\d)[tT](\d\d):(\d\d):(\d\d)(\.(\d+))?(([-+]\d\d:\d\d)|[zZ])$/);
const IMF_FIXDATE = new RegExp(`^${ddd}, ${date} ${mmm} ${year} ${time} GMT$`);
const RFC_850_DATE = new RegExp(`^${ddd}, ${date}-${mmm}-(\\d\\d) ${time} GMT$`);
const ASC_TIME = new RegExp(`^${ddd} ${mmm} ( [1-9]|\\d\\d) ${time} ${year}$`);
const months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
export const _parseEpochTimestamp = (value) => {
if (value == null) {
return void 0;
}
let num = NaN;
if (typeof value === "number") {
num = value;
}
else if (typeof value === "string") {
if (!/^-?\d*\.?\d+$/.test(value)) {
throw new TypeError(`parseEpochTimestamp - numeric string invalid.`);
}
num = Number.parseFloat(value);
}
else if (typeof value === "object" && value.tag === 1) {
num = value.value;
}
if (isNaN(num) || Math.abs(num) === Infinity) {
throw new TypeError("Epoch timestamps must be valid finite numbers.");
}
return new Date(Math.round(num * 1000));
};
export const _parseRfc3339DateTimeWithOffset = (value) => {
if (value == null) {
return void 0;
}
if (typeof value !== "string") {
throw new TypeError("RFC3339 timestamps must be strings");
}
const matches = RFC3339_WITH_OFFSET.exec(value);
if (!matches) {
throw new TypeError(`Invalid RFC3339 timestamp format ${value}`);
}
const [, yearStr, monthStr, dayStr, hours, minutes, seconds, , ms, offsetStr] = matches;
range(monthStr, 1, 12);
range(dayStr, 1, 31);
range(hours, 0, 23);
range(minutes, 0, 59);
range(seconds, 0, 60);
const date = new Date(Date.UTC(Number(yearStr), Number(monthStr) - 1, Number(dayStr), Number(hours), Number(minutes), Number(seconds), Number(ms) ? Math.round(parseFloat(`0.${ms}`) * 1000) : 0));
date.setUTCFullYear(Number(yearStr));
if (offsetStr.toUpperCase() != "Z") {
const [, sign, offsetH, offsetM] = /([+-])(\d\d):(\d\d)/.exec(offsetStr) || [void 0, "+", 0, 0];
const scalar = sign === "-" ? 1 : -1;
date.setTime(date.getTime() + scalar * (Number(offsetH) * 60 * 60 * 1000 + Number(offsetM) * 60 * 1000));
}
return date;
};
export const _parseRfc7231DateTime = (value) => {
if (value == null) {
return void 0;
}
if (typeof value !== "string") {
throw new TypeError("RFC7231 timestamps must be strings.");
}
let day;
let month;
let year;
let hour;
let minute;
let second;
let fraction;
let matches;
if ((matches = IMF_FIXDATE.exec(value))) {
[, day, month, year, hour, minute, second, fraction] = matches;
}
else if ((matches = RFC_850_DATE.exec(value))) {
[, day, month, year, hour, minute, second, fraction] = matches;
year = (Number(year) + 1900).toString();
}
else if ((matches = ASC_TIME.exec(value))) {
[, month, day, hour, minute, second, fraction, year] = matches;
}
if (year && second) {
const timestamp = Date.UTC(Number(year), months.indexOf(month), Number(day), Number(hour), Number(minute), Number(second), fraction ? Math.round(parseFloat(`0.${fraction}`) * 1000) : 0);
range(day, 1, 31);
range(hour, 0, 23);
range(minute, 0, 59);
range(second, 0, 60);
const date = new Date(timestamp);
date.setUTCFullYear(Number(year));
return date;
}
throw new TypeError(`Invalid RFC7231 date-time value ${value}.`);
};
function range(v, min, max) {
const _v = Number(v);
if (_v < min || _v > max) {
throw new Error(`Value ${_v} out of range [${min}, ${max}]`);
}
}