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'use strict'; require('../common'); const assert = require('assert'); function FakeBuffer() { } Object.setPrototypeOf(FakeBuffer, Buffer); Object.setPrototypeOf(FakeBuffer.prototype, Buffer.prototype); const fb = new FakeBuffer(); assert.throws(function() { Buffer.from(fb); }, TypeError); assert.throws(function() { +Buffer.prototype; }, TypeError); assert.throws(function() { Buffer.compare(fb, Buffer.alloc(0)); }, TypeError); assert.throws(function() { fb.write('foo'); }, TypeError); assert.throws(function() { Buffer.concat([fb, fb]); }, TypeError); assert.throws(function() { fb.toString(); }, TypeError); assert.throws(function() { fb.equals(Buffer.alloc(0)); }, TypeError); assert.throws(function() { fb.indexOf(5); }, TypeError); assert.throws(function() { fb.readFloatLE(0); }, TypeError); assert.throws(function() { fb.writeFloatLE(0); }, TypeError); assert.throws(function() { fb.fill(0); }, TypeError);