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Refactor to make failure messages more consistent

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This commit is contained in:
Ben Lichtman 2019-12-17 17:41:38 -08:00
parent 925582d034
commit 42dc4155ce
1 changed files with 10 additions and 2 deletions
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12
src/server/scriptInfo.ts
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@ -623,8 +623,7 @@ namespace ts.server {
positionToLineOffset(position: number): protocol.Location {
const location = this.textStorage.positionToLineOffset(position);
Debug.assert(typeof location.line === "number" && location.line > 0, `Expected line ${location.line} to be greater than 0.`);
Debug.assert(typeof location.offset === "number" && location.offset > 0, `Expected offset ${location.offset} to be greater than 0.`);
failIfInvalidLocation(location);
return location;
}
@ -645,4 +644,13 @@ namespace ts.server {
}
}
}
/*@internal*/
function failIfInvalidLocation(location: protocol.Location) {
Debug.assert(typeof location.line === "number", `Expected line ${location.line} to be a number.`);
Debug.assert(typeof location.offset === "number", `Expected offset ${location.offset} to be a number.`);
Debug.assert(location.line > 0, `Expected line to be non-${location.line === 0 ? "zero" : "negative"}`);
Debug.assert(location.offset > 0, `Expected offset to be non-${location.offset === 0 ? "zero" : "negative"}`);
}
}