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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 2188x 2188x 2188x 20x 20x 20x 1472x 1472x 66x 66x 66x 66x 64x 64x 66x 66x 1472x 1472x 20x 1472x 1472x 132x 132x 132x 132x 132x 132x 132x 1472x 1472x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x | // LazyTransform is a special type of Transform stream that is lazily loaded.
// This is used for performance with bi-API-ship: when two APIs are available
// for the stream, one conventional and one non-conventional.
'use strict';
const {
ObjectDefineProperties,
ObjectDefineProperty,
ObjectSetPrototypeOf,
} = primordials;
const stream = require('stream');
const {
getDefaultEncoding
} = require('internal/crypto/util');
module.exports = LazyTransform;
function LazyTransform(options) {
this._options = options;
}
ObjectSetPrototypeOf(LazyTransform.prototype, stream.Transform.prototype);
ObjectSetPrototypeOf(LazyTransform, stream.Transform);
function makeGetter(name) {
return function() {
stream.Transform.call(this, this._options);
this._writableState.decodeStrings = false;
if (!this._options || !this._options.defaultEncoding) {
this._writableState.defaultEncoding = getDefaultEncoding();
}
return this[name];
};
}
function makeSetter(name) {
return function(val) {
ObjectDefineProperty(this, name, {
__proto__: null,
value: val,
enumerable: true,
configurable: true,
writable: true
});
};
}
ObjectDefineProperties(LazyTransform.prototype, {
_readableState: {
__proto__: null,
get: makeGetter('_readableState'),
set: makeSetter('_readableState'),
configurable: true,
enumerable: true
},
_writableState: {
__proto__: null,
get: makeGetter('_writableState'),
set: makeSetter('_writableState'),
configurable: true,
enumerable: true
}
});
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