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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/is-stream/index.js
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-rw-r--r--node_modules/is-stream/index.js21
1 files changed, 21 insertions, 0 deletions
diff --git a/node_modules/is-stream/index.js b/node_modules/is-stream/index.js
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+'use strict';
+
+var isStream = module.exports = function (stream) {
+ return stream !== null && typeof stream === 'object' && typeof stream.pipe === 'function';
+};
+
+isStream.writable = function (stream) {
+ return isStream(stream) && stream.writable !== false && typeof stream._write === 'function' && typeof stream._writableState === 'object';
+};
+
+isStream.readable = function (stream) {
+ return isStream(stream) && stream.readable !== false && typeof stream._read === 'function' && typeof stream._readableState === 'object';
+};
+
+isStream.duplex = function (stream) {
+ return isStream.writable(stream) && isStream.readable(stream);
+};
+
+isStream.transform = function (stream) {
+ return isStream.duplex(stream) && typeof stream._transform === 'function' && typeof stream._transformState === 'object';
+};