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Merge pull request #9090 from weswigham/allow-empty-lists-command-line

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Allow empty lists on command line
This commit is contained in:
Wesley Wigham
2016-06-14 00:29:15 -07:00
committed by GitHub
parent f9923efd09 8d83cd167f
commit 9d023a83fe
2 changed files with 46 additions and 10 deletions
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22
src/compiler/commandLineParser.ts
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@@ -493,13 +493,20 @@ namespace ts {
}
/* @internal */
export function parseListTypeOption(opt: CommandLineOptionOfListType, value: string, errors: Diagnostic[]): (string | number)[] {
const values = trimString((value || "")).split(",");
export function parseListTypeOption(opt: CommandLineOptionOfListType, value = "", errors: Diagnostic[]): (string | number)[] | undefined {
value = trimString(value);
if (startsWith(value, "-")) {
return undefined;
}
if (value === "") {
return [];
}
const values = value.split(",");
switch (opt.element.type) {
case "number":
return ts.map(values, parseInt);
return map(values, parseInt);
case "string":
return ts.map(values, v => v || "");
return map(values, v => v || "");
default:
return filter(map(values, v => parseCustomTypeOption(<CommandLineOptionOfCustomType>opt.element, v, errors)), v => !!v);
}
@@ -560,8 +567,11 @@ namespace ts {
i++;
break;
case "list":
options[opt.name] = parseListTypeOption(<CommandLineOptionOfListType>opt, args[i], errors);
i++;
const result = parseListTypeOption(<CommandLineOptionOfListType>opt, args[i], errors);
options[opt.name] = result || [];
if (result) {
i++;
}
break;
// If not a primitive, the possible types are specified in what is effectively a map of options.
default: