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Use native map

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This commit is contained in:
Ryan Cavanaugh 2018-06-09 09:15:17 -07:00
parent 1de2f839f2
commit b97bc8e071
1 changed files with 7 additions and 12 deletions
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19
src/compiler/tsbuild.ts
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@ -202,7 +202,7 @@ namespace ts {
*/
function createFileMap<T>(): FileMap<T> {
// tslint:disable-next-line:no-null-keyword
const lookup: { [key: string]: T } = Object.create(/*prototype*/ null);
const lookup = createMap<T>();
return {
setValue,
@ -218,21 +218,21 @@ namespace ts {
}
function hasKey(fileName: string) {
return normalizePath(fileName) in lookup;
return lookup.has(normalizePath(fileName));
}
function removeKey(fileName: string) {
delete lookup[fileName];
lookup.delete(normalizePath(fileName));
}
function setValue(fileName: string, value: T) {
lookup[normalizePath(fileName)] = value;
lookup.set(normalizePath(fileName), value);
}
function getValue(fileName: string): T | never {
const f = normalizePath(fileName);
if (f in lookup) {
return lookup[f];
if (lookup.has(f)) {
return lookup.get(f)!;
}
else {
throw new Error(`No value corresponding to ${fileName} exists in this map`);
@ -241,12 +241,7 @@ namespace ts {
function getValueOrUndefined(fileName: string): T | undefined {
const f = normalizePath(fileName);
if (f in lookup) {
return lookup[f];
}
else {
return undefined;
}
return lookup.get(f);
}
}