1 | import baseIndexOf from './_baseIndexOf';
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2 |
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3 | /**
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4 | * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
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5 | * that is not found in the character symbols.
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6 | *
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7 | * @private
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8 | * @param {Array} strSymbols The string symbols to inspect.
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9 | * @param {Array} chrSymbols The character symbols to find.
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10 | * @returns {number} Returns the index of the first unmatched string symbol.
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11 | */
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12 | function charsStartIndex(strSymbols, chrSymbols) {
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13 | var index = -1,
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14 | length = strSymbols.length;
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15 |
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16 | while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
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17 | return index;
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18 | }
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19 |
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20 | export default charsStartIndex;
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