| 1 | export default function getLocation ( source, charIndex ) {
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| 2 | const lines = source.split( '\n' );
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| 3 | const len = lines.length;
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| 4 |
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| 5 | let lineStart = 0;
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| 6 | let i;
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| 7 |
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| 8 | for ( i = 0; i < len; i += 1 ) {
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| 9 | const line = lines[i];
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| 10 | const lineEnd = lineStart + line.length + 1; // +1 for newline
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| 11 |
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| 12 | if ( lineEnd > charIndex ) {
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| 13 | return { line: i + 1, column: charIndex - lineStart };
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| 14 | }
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| 15 |
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| 16 | lineStart = lineEnd;
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| 17 | }
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| 18 |
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| 19 | throw new Error( 'Could not determine location of character' );
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| 20 | }
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