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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 | 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 2165x 2165x 2165x 19x 19x 19x 1604x 1604x 66x 66x 66x 66x 64x 64x 66x 66x 1604x 1604x 19x 1604x 1604x 132x 132x 132x 132x 132x 132x 1604x 1604x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x | // 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, {
value: val,
enumerable: true,
configurable: true,
writable: true
});
};
}
ObjectDefineProperties(LazyTransform.prototype, {
_readableState: {
get: makeGetter('_readableState'),
set: makeSetter('_readableState'),
configurable: true,
enumerable: true
},
_writableState: {
get: makeGetter('_writableState'),
set: makeSetter('_writableState'),
configurable: true,
enumerable: true
}
});
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