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README.md
es-set-tostringtag 
A helper to optimistically set Symbol.toStringTag, when possible.
Example
Most common usage:
var assert = require('assert');
var setToStringTag = require('es-set-tostringtag');
var obj = {};
assert.equal(Object.prototype.toString.call(obj), '[object Object]');
setToStringTag(obj, 'tagged!');
assert.equal(Object.prototype.toString.call(obj), '[object tagged!]');
Options
An optional options argument can be provided as the third argument. The available options are:
force
If the force option is set to true, the toStringTag will be set even if it is already set.
nonConfigurable
If the nonConfigurable option is set to true, the toStringTag will be defined as non-configurable when possible.
Tests
Simply clone the repo, npm install, and run npm test