24 lines
735 B
JavaScript
24 lines
735 B
JavaScript
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// A typed callback cannot raise, so the bindings report an argument they reject
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// with a result no successful call can produce. There is one sentinel per error
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// the untyped callback raises directly, so that the error does not change once
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// V8 takes the fast path.
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const OUT_OF_BOUNDS = -2147483648
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const INVALID_BUFFER = -2147483647
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const INVALID_STRING = -2147483646
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module.exports = function checked(result) {
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if (result === OUT_OF_BOUNDS) {
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throw new RangeError('View is out of bounds of its backing store')
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}
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if (result === INVALID_BUFFER) {
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throw new TypeError('Buffer must be an array buffer')
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}
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if (result === INVALID_STRING) {
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throw new TypeError('String must be a string')
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}
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return result
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}
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