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'use strict';
const prefix = '(node) ';
// All the internal deprecations have to use this function only, as this will
// prepend the prefix to the actual message.
exports.deprecate = function(fn, msg) {
return exports._deprecate(fn, `${prefix}${msg}`);
};
// All the internal deprecations have to use this function only, as this will
// prepend the prefix to the actual message.
exports.printDeprecationMessage = function(msg, warned) {
return exports._printDeprecationMessage(`${prefix}${msg}`, warned);
};
exports._printDeprecationMessage = function(msg, warned) {
if (process.noDeprecation)
return true;
if (warned)
return warned;
if (process.throwDeprecation)
throw new Error(msg);
else if (process.traceDeprecation)
console.trace(msg.startsWith(prefix) ? msg.replace(prefix, '') : msg);
else
console.error(msg);
return true;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports._deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (global.process === undefined) {
return function() {
return exports._deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
warned = exports._printDeprecationMessage(msg, warned);
return fn.apply(this, arguments);
}
return deprecated;
};