diff options
author | Yuchen Pei <hi@ypei.me> | 2022-07-28 15:32:10 +1000 |
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committer | Yuchen Pei <hi@ypei.me> | 2022-07-28 15:32:10 +1000 |
commit | 5b10a10743b8459f64fe83e0ff420f69da79c9a4 (patch) | |
tree | c61904d688247790181d4955a4074b8c94302c03 /utilities/hash_script/node_modules/is-stream/index.js | |
parent | b98cb70b1bcd5b211aaa5d2675f96416911c0647 (diff) |
Moving scripts and utilities into a new utilities dir
Diffstat (limited to 'utilities/hash_script/node_modules/is-stream/index.js')
-rw-r--r-- | utilities/hash_script/node_modules/is-stream/index.js | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/utilities/hash_script/node_modules/is-stream/index.js b/utilities/hash_script/node_modules/is-stream/index.js new file mode 100644 index 0000000..6f7ec91 --- /dev/null +++ b/utilities/hash_script/node_modules/is-stream/index.js @@ -0,0 +1,21 @@ +'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'; +}; |