common.js
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/**
* common.js: Internal helper and utility functions for winston.
*
* (C) 2010 Charlie Robbins
* MIT LICENCE
*/
'use strict';
const { format } = require('util');
/**
* Set of simple deprecation notices and a way to expose them for a set of
* properties.
* @type {Object}
* @private
*/
exports.warn = {
deprecated(prop) {
return () => {
throw new Error(format('{ %s } was removed in winston@3.0.0.', prop));
};
},
useFormat(prop) {
return () => {
throw new Error([
format('{ %s } was removed in winston@3.0.0.', prop),
'Use a custom winston.format = winston.format(function) instead.'
].join('\n'));
};
},
forFunctions(obj, type, props) {
props.forEach(prop => {
obj[prop] = exports.warn[type](prop);
});
},
moved(obj, movedTo, prop) {
function movedNotice() {
return () => {
throw new Error([
format('winston.%s was moved in winston@3.0.0.', prop),
format('Use a winston.%s instead.', movedTo)
].join('\n'));
};
}
Object.defineProperty(obj, prop, {
get: movedNotice,
set: movedNotice
});
},
forProperties(obj, type, props) {
props.forEach(prop => {
const notice = exports.warn[type](prop);
Object.defineProperty(obj, prop, {
get: notice,
set: notice
});
});
}
};