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author | Anna Henningsen <anna@addaleax.net> | 2018-04-05 22:51:49 +0200 |
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committer | Anna Henningsen <anna@addaleax.net> | 2018-04-05 23:00:02 +0200 |
commit | e37effe4cec98688e75d770f4d0b7f68927e2b73 (patch) | |
tree | e7efa0fc8a2139f9aba4b66ea3f3613262f20cef /deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/cliui/node_modules/string-width/index.js | |
parent | 026f6b787a7a23597790f1f0b076c58a68c7c38b (diff) | |
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Revert "deps: upgrade npm to 5.8.0"
This reverts commit 25a816dcda7b1db0929501acfe13f2fe5119759b.
PR-URL: https://github.com/nodejs/node/pull/19837
Reviewed-By: Gus Caplan <me@gus.host>
Diffstat (limited to 'deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/cliui/node_modules/string-width/index.js')
-rw-r--r-- | deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/cliui/node_modules/string-width/index.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/cliui/node_modules/string-width/index.js b/deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/cliui/node_modules/string-width/index.js new file mode 100644 index 0000000000..b9bec62440 --- /dev/null +++ b/deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/cliui/node_modules/string-width/index.js @@ -0,0 +1,37 @@ +'use strict'; +var stripAnsi = require('strip-ansi'); +var codePointAt = require('code-point-at'); +var isFullwidthCodePoint = require('is-fullwidth-code-point'); + +// https://github.com/nodejs/io.js/blob/cff7300a578be1b10001f2d967aaedc88aee6402/lib/readline.js#L1345 +module.exports = function (str) { + if (typeof str !== 'string' || str.length === 0) { + return 0; + } + + var width = 0; + + str = stripAnsi(str); + + for (var i = 0; i < str.length; i++) { + var code = codePointAt(str, i); + + // ignore control characters + if (code <= 0x1f || (code >= 0x7f && code <= 0x9f)) { + continue; + } + + // surrogates + if (code >= 0x10000) { + i++; + } + + if (isFullwidthCodePoint(code)) { + width += 2; + } else { + width++; + } + } + + return width; +}; |