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Revert changes to core.ts

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This commit is contained in:
Ron Buckton
2016-12-08 18:27:49 -08:00
parent 6a1ccd8de4
commit c0a73b2ed8
1 changed files with 4 additions and 57 deletions
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61
src/compiler/core.ts
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@@ -571,32 +571,13 @@ namespace ts {
* @param copyOnWrite Indicates whether to return a fresh array rather than modify the
* existing array.
*/
export function append<T>(to: T[] | undefined, value: T | undefined, copyOnWrite?: boolean): T[] | undefined {
export function append<T>(to: T[] | undefined, value: T | undefined): T[] | undefined {
if (value === undefined) return to;
if (to === undefined) return [value];
if (copyOnWrite) return [...to, value];
to.push(value);
return to;
}
/**
* Prepends a value to an array, returning the array.
*
* @param to The array to which `value` is to be prepended. If `to` is `undefined`, a new array
* is created if `value` was prepended.
* @param value The value to prepend to the array. If `value` is `undefined`, nothing is
* prepended.
* @param copyOnWrite Indicates whether to return a fresh array rather than modify the
* existing array.
*/
export function prepend<T>(to: T[] | undefined, value: T | undefined, copyOnWrite?: boolean): T[] | undefined {
if (value === undefined) return to;
if (to === undefined) return [value];
if (copyOnWrite) return [value, ...to];
to.unshift(value);
return to;
}
/**
* Appends a range of value to an array, returning the array.
*
@@ -604,45 +585,11 @@ namespace ts {
* is created if `value` was appended.
* @param from The values to append to the array. If `from` is `undefined`, nothing is
* appended. If an element of `from` is `undefined`, that element is not appended.
* @param copyOnWrite Indicates whether to return a fresh array rather than modify the
* existing array.
*/
export function addRange<T>(to: T[] | undefined, from: T[] | undefined, copyOnWrite?: boolean): T[] | undefined {
export function addRange<T>(to: T[] | undefined, from: T[] | undefined): T[] | undefined {
if (from === undefined) return to;
from = filter(from, isDefined);
if (to === undefined) return from;
if (from.length > 0) {
if (copyOnWrite) {
return [...to, ...from];
}
for (const v of from) {
to.push(v);
}
}
return to;
}
/**
* Appends a range of value to an array, returning the array.
*
* @param to The array to which `value` is to be appended. If `to` is `undefined`, a new array
* is created if `value` was appended.
* @param from The values to append to the array. If `from` is `undefined`, nothing is
* appended. If an element of `from` is `undefined`, that element is not appended.
* @param copyOnWrite Indicates whether to return a fresh array rather than modify the
* existing array.
*/
export function prependRange<T>(to: T[] | undefined, from: T[] | undefined, copyOnWrite?: boolean): T[] | undefined {
if (from === undefined) return to;
from = filter(from, isDefined);
if (to === undefined) return from;
if (from.length > 0) {
if (copyOnWrite) {
return [...from, ...to];
}
for (let i = from.length - 1; i >= 0; i--) {
to.unshift(from[i]);
}
for (const v of from) {
to = append(to, v);
}
return to;
}