Module:No globals: Difference between revisions
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m (1 revision imported) |
Mediawiki>Minorax m (7 revisions imported from meta:Module:No_globals) |
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| Line 2: | Line 2: | ||
function mt.__index (t, k) | function mt.__index (t, k) | ||
if k ~= 'arg' then | if k ~= 'arg' then | ||
error(' | -- perf optimization here and below: do not load Module:TNT unless there is an error | ||
error(require('Module:TNT').format('I18n/No globals', 'err-read', tostring(k)), 2) | |||
end | end | ||
return nil | return nil | ||
| Line 8: | Line 9: | ||
function mt.__newindex(t, k, v) | function mt.__newindex(t, k, v) | ||
if k ~= 'arg' then | if k ~= 'arg' then | ||
error(' | error(require('Module:TNT').format('I18n/No globals', 'err-write', tostring(k)), 2) | ||
end | end | ||
rawset(t, k, v) | rawset(t, k, v) | ||
end | end | ||
setmetatable(_G, mt) | setmetatable(_G, mt) | ||
Revision as of 21:09, 29 February 2020
 Lua error in Module:TNT at line 158: Missing JsonConfig extension; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Shared Template Warning.tab. | Lua error in Module:TNT at line 158: Missing JsonConfig extension; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Shared Template Warning.tab. Lua error in Module:TNT at line 158: Missing JsonConfig extension; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Shared Template Warning.tab. |
 | <translate> This module is rated as [[<tvar name=1>Special:MyLanguage/Category:Modules for general use</tvar>|ready for general use]].</translate> <translate> It has reached a mature form and is thought to be bug-free and ready for use wherever appropriate.</translate> <translate> It is ready to mention on help pages and other resources as an option for new users to learn.</translate> <translate> To reduce server load and bad output, it should be improved by sandbox testing rather than repeated trial-and-error editing.</translate> |
 | <translate> This module is [[<tvar name=1>Special:MyLanguage/Category:Modules subject to page protection</tvar>|subject to {{<tvar name=2>#if:</tvar>|cascading|page}} protection]].</translate> <translate> It is a highly visible module in use by a very large number of pages.</translate> <translate> Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is [[<tvar name=1>Special:MyLanguage/Project:Protected page</tvar>|protected]] from editing.</translate> |
Usage
Include this module at the top of your code. An error will be raised any time your code tries to read or write to a non-local (undeclared) variable.
Tests
| Module:No globals | success: 0, error: 1, skipped: 0 |
| Module:No globals/sandbox | success: 0, error: 1, skipped: 0 |
- Lua error in Module:TNT at line 158: Missing JsonConfig extension; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/ModuleQuality.tab.
- Lua error in Module:TNT at line 158: Missing JsonConfig extension; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/ModuleQuality.tab.
[[Category:Modules{{#translation:}}]]
local mt = getmetatable(_G) or {}
function mt.__index (t, k)
if k ~= 'arg' then
-- perf optimization here and below: do not load Module:TNT unless there is an error
error(require('Module:TNT').format('I18n/No globals', 'err-read', tostring(k)), 2)
end
return nil
end
function mt.__newindex(t, k, v)
if k ~= 'arg' then
error(require('Module:TNT').format('I18n/No globals', 'err-write', tostring(k)), 2)
end
rawset(t, k, v)
end
setmetatable(_G, mt)