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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 | 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 2171x 2171x 2171x 22x 22x 22x 2510x 2510x 66x 66x 66x 66x 64x 64x 66x 66x 2510x 2510x 22x 2510x 2510x 132x 132x 132x 132x 132x 132x 132x 2510x 2510x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x | // 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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