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util: throw if unreachable TypedArray checking code is reached #31737

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util: throw if unreachable TypedArray checking code is reached #31737

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7 changes: 6 additions & 1 deletion lib/internal/util/comparisons.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ const {
} = primordials;

const { compare } = internalBinding('buffer');
const assert = require('internal/assert');
const types = require('internal/util/types');
const {
isAnyArrayBuffer,
Expand Down Expand Up @@ -145,7 +146,11 @@ function isIdenticalTypedArrayType(a, b) {
return check(b);
}
}
return false;
/* c8 ignore next */
assert.fail(
`Unknown TypedArray type checking ${a[SymbolToStringTag]} ${a}\n` +
`and ${b[SymbolToStringTag]} ${b}`
);
}

// Notes: Type tags are historical [[Class]] properties that can be set by
Expand Down