import { trimAfterFirstMatch } from './util.js'
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// Regular expression of characters typically used to start a second phone number for the purposes
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// of parsing. This allows us to strip off parts of the number that are actually the start of
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// another number, such as for: (530) 583-6985 x302/x2303 -> the second extension here makes this
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// actually two phone numbers, (530) 583-6985 x302 and (530) 583-6985 x2303. We remove the second
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// extension so that the first number is parsed correctly.
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//
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// Matches a slash (\ or /) followed by a space followed by an `x`.
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//
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const SECOND_NUMBER_START_PATTERN = /[\\/] *x/
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export default function parsePreCandidate(candidate)
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{
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// Check for extra numbers at the end.
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// TODO: This is the place to start when trying to support extraction of multiple phone number
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// from split notations (+41 79 123 45 67 / 68).
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return trimAfterFirstMatch(SECOND_NUMBER_START_PATTERN, candidate)
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}
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