mirror of
https://github.com/react/react-native-devtools-frontend.git
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Nikolay Vitkov
d76576c6fe
This is need to be able to move to flat config which I am handling in a separate CL. The overrides are there as these packages got update today, so we need to way, but they were last touched 3 years ago, so reviewing their changes upstream as well. Bug: none Change-Id: I61534f881fd4e747c716b42b773f8f7f3e9bc761 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6063618 Commit-Queue: Nikolay Vitkov <nvitkov@chromium.org> Reviewed-by: Danil Somsikov <dsv@chromium.org>
34 lines
1.6 KiB
JavaScript
34 lines
1.6 KiB
JavaScript
'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var $Date = GetIntrinsic('%Date%');
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var $TypeError = require('es-errors/type');
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var isNaN = require('../helpers/isNaN');
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var callBound = require('call-bind/callBound');
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var $indexOf = callBound('String.prototype.indexOf');
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var $slice = callBound('String.prototype.slice');
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var $toTimeString = callBound('Date.prototype.toTimeString');
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// https://262.ecma-international.org/9.0/#sec-timezoneestring
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module.exports = function TimeZoneString(tv) {
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if (typeof tv !== 'number' || isNaN(tv)) {
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throw new $TypeError('Assertion failed: `tv` must be a non-NaN Number'); // steps 1 - 2
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}
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// 3. Let offset be LocalTZA(tv, true).
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// 4. If offset ≥ 0, let offsetSign be "+"; otherwise, let offsetSign be "-".
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// 5. Let offsetMin be the String representation of MinFromTime(abs(offset)), formatted as a two-digit decimal number, padded to the left with a zero if necessary.
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// 6. Let offsetHour be the String representation of HourFromTime(abs(offset)), formatted as a two-digit decimal number, padded to the left with a zero if necessary.
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// 7. Let tzName be an implementation-defined string that is either the empty string or the string-concatenation of the code unit 0x0020 (SPACE), the code unit 0x0028 (LEFT PARENTHESIS), an implementation-dependent timezone name, and the code unit 0x0029 (RIGHT PARENTHESIS).
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// 8. Return the string-concatenation of offsetSign, offsetHour, offsetMin, and tzName.
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// hack until LocalTZA, and "implementation-defined string" are available
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var ts = $toTimeString(new $Date(tv));
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return $slice(ts, $indexOf(ts, '(') + 1, $indexOf(ts, ')'));
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};
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