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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 | 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 2161x 2161x 2161x 20x 20x 20x 1162x 1162x 66x 66x 66x 66x 64x 64x 66x 66x 1162x 1162x 20x 1162x 1162x 132x 132x 132x 132x 132x 132x 1162x 1162x 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, {
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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